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3549 Commits

Author SHA1 Message Date
Andrew Lenharth
2a8fc23411 Correct stack stuff for FP 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19973 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 20:35:57 +00:00
Andrew Lenharth
2f40163323 try to match alpha pattern 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19972 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 20:35:11 +00:00
Andrew Lenharth
daf4b0477f fix register names 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19971 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 20:34:29 +00:00
Andrew Lenharth
c1faced5ff pecimise loads, put indirect call addr in right register. still doesn't fix methcall 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19963 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-02-01 01:37:24 +00:00
Misha Brukman
41ce39cbd7 Fix hyphenation in output comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19954 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-31 06:19:57 +00:00
Andrew Lenharth
b8b6e6a524 indirect call fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19945 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-31 03:19:31 +00:00
Andrew Lenharth
7efadce56e fp to int and back conversion sequences 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19944 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-31 01:44:26 +00:00
Andrew Lenharth
7b2a5270b7 added fp extend and removed a forgotten assert in more than 6 arg support (should break somewhere else now :) ) and fix an incorrect asm sequence for indirect calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19938 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-30 20:42:36 +00:00
Chris Lattner
e2752ddefc This code is really unreachable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19934 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-30 16:33:46 +00:00
Chris Lattner
d7b59d0181 Fix warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19933 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-30 16:32:48 +00:00
Andrew Lenharth
684f229895 support for larger calls 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19932 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-30 00:35:27 +00:00
Chris Lattner
ea622d53e2 Unbreak the build :( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19926 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 19:27:28 +00:00
Andrew Lenharth
2c59435ca5 first step towards a correct and complete stack. also add some forms for things that were getting stuck in the nightly tester. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19914 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 15:42:07 +00:00
Chris Lattner
23ba420550 Finegrainify namespacification. 
Adjust TmpInstruction to work with the new User model.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19896 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 00:36:59 +00:00
Chris Lattner
3d80f90394 add namespace qualifier 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19895 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-29 00:36:38 +00:00
Andrew Lenharth
cc1b16faed fix ExprMap, partially teach about add long 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19882 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-28 23:17:54 +00:00
Andrew Lenharth
6b9870abce fix ExprMap and constant check in setcc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19870 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-28 14:06:46 +00:00
Andrew Lenharth
40831c5e0e move FP into it's own select 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19867 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-28 06:57:18 +00:00
Andrew Lenharth
04c868ef50 stack frame fix and zero FP reg fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19857 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-27 08:31:19 +00:00
Andrew Lenharth
10b400705d Floating point instructions like Floating point registers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19856 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-27 07:58:15 +00:00
Andrew Lenharth
d2bb960d8c int to float conversion and another setcc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19855 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-27 07:50:35 +00:00
Andrew Lenharth
3d65d31e20 teach isel about comparison with constants and zero extending bits 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19853 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-27 03:49:45 +00:00
Andrew Lenharth
7e57bd518e perhaps this will let me have calls again 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19851 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-27 01:22:48 +00:00
Andrew Lenharth
c0d502e20f minor bug fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19850 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-27 00:52:26 +00:00
Andrew Lenharth
51d3ab4ad4 minor bug fix 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19849 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-27 00:51:05 +00:00
Andrew Lenharth
98a32d09f3 added instructions for fp to int to fp moves 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19848 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-26 23:56:48 +00:00
Andrew Lenharth
3e98fde96b initial fp support 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19847 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-26 21:54:09 +00:00
Andrew Lenharth
fc16691925 hum, writing on one machine, testing on another... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19844 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-26 02:53:56 +00:00
Andrew Lenharth
0298118cbb add some operations, fix others. should compile several more tests now 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19843 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-26 01:24:38 +00:00
Chris Lattner
3576c84baf We can fold promoted and non-promoted loads into divs also! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19835 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-25 20:35:10 +00:00
Chris Lattner
44129b5b68 Fold promoted loads into binary ops for FP, allowing us to generate m32 forms 
of FP ops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19834 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-25 20:03:11 +00:00
Andrew Lenharth
d279b4157a problems with bools, and their work arounds 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19833 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-25 19:58:40 +00:00
Andrew Lenharth
2f8fb77297 more load choices, better add with imm 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19821 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-25 00:35:34 +00:00
Andrew Lenharth
2d6f022a98 Clean ups, and taught the instruction selector about immediate forms 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19816 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-24 19:44:07 +00:00
Andrew Lenharth
a7246caf8f Alpha JIT prune 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19815 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-24 18:48:22 +00:00
Andrew Lenharth
886470efec include prune and JIT prune 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19814 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-24 18:45:41 +00:00
Andrew Lenharth
01269524ce Pruned includes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19813 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-24 18:37:48 +00:00
Chris Lattner
bb4dca3286 Fix a spurious warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19799 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-24 01:40:18 +00:00
Chris Lattner
0a07883694 Silence a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19798 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 23:20:06 +00:00
Chris Lattner
42e25b387f Allow the FP stackifier to completely ignore functions that do not use FP at 
all.  This should speed up the X86 backend fairly significantly on integer
codes.  Now if only we didn't have to compute livevar still... ;-)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19796 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 23:13:59 +00:00
Chris Lattner
1fefef1b27 Build Alpha by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19777 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 04:34:46 +00:00
Reid Spencer
a8411a698e Fix alloca support for Cygwin. On cygwin its __alloca not __builtin_alloca 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19776 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 04:32:47 +00:00
Reid Spencer
5dc81f63d1 Support Cygwin assembly generation. The cygwin version of Gnu ASsembler 
doesn't support certain directives and symbols on cygwin are prefixed with
an underscore. This patch makes the necessary adjustments to the output.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19775 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-23 03:52:14 +00:00
Andrew Lenharth
304d0f3076 Let me introduce you to the early stages of the llvm backend for the alpha processor 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19764 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-22 23:41:55 +00:00
Chris Lattner
fb0f53f9c1 Speed up folding operations into loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19733 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-21 21:43:02 +00:00
Chris Lattner
67b1c3c404 The ever-important vanity pass name :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19731 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-21 21:35:14 +00:00
Chris Lattner
b62e1e296e Fix a FIXME: realize that argument stores are all independent (don't alias) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19728 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-21 19:46:38 +00:00
Chris Lattner
19ad0620bc Implement ADD_PARTS/SUB_PARTS so that 64-bit integer add/sub work. This 
fixes most of the remaining llc-beta failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19716 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-20 18:53:00 +00:00
Chris Lattner
bf52d49f36 Fix a crash compiling 134.perl. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19711 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-20 16:50:16 +00:00
Chris Lattner
c3c021bcad Fix a problem where were were literally selecting for INCREASED register 
pressure, not decreases register pressure.  Fix problem where we accidentally
swapped the operands of SHLD, which caused fourinarow to fail.  This fixes
fourinarow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19697 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 17:24:34 +00:00
Chris Lattner
a76f04828a When commuting these instructions, make sure to actually swap the operands too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19694 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 16:55:52 +00:00
Chris Lattner
4053b1e30b Implement Regression/CodeGen/X86/rotate.ll: emit rotate instructions (which 
typically cost 1 cycle) instead of shld/shrd instruction (which are typically
6 or more cycles).  This also saves code space.

For example, instead of emitting:

rotr:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %CL, BYTE PTR [%ESP + 8]
        shrd %EAX, %EAX, %CL
        ret
rotli:
        mov %EAX, DWORD PTR [%ESP + 4]
        shrd %EAX, %EAX, 27
        ret

Emit:

rotr32:
        mov %CL, BYTE PTR [%ESP + 8]
        mov %EAX, DWORD PTR [%ESP + 4]
        ror %EAX, %CL
        ret
rotli32:
        mov %EAX, DWORD PTR [%ESP + 4]
        ror %EAX, 27
        ret

We also emit byte rotate instructions which do not have a sh[lr]d counterpart
at all.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19692 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 08:07:05 +00:00
Chris Lattner
40ff633b05 Add rotate instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19690 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 07:50:03 +00:00
Chris Lattner
30ea1e9411 Match 16-bit shld/shrd instructions as well, implementing shift-double.llx:test5 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19689 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 07:37:26 +00:00
Chris Lattner
0df53d22c3 Improve coverage of the X86 instruction set by adding 16-bit shift doubles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19687 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 07:31:24 +00:00
Chris Lattner
41e431ba04 Teach the code generator that shrd/shld is commutable if it has an immediate. 
This allows us to generate this:

foo:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        shld %EDX, %EDX, 2
        shl %EAX, 2
        ret

instead of this:

foo:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, DWORD PTR [%ESP + 8]
        mov %EDX, %EAX
        shrd %EDX, %ECX, 30
        shl %EAX, 2
        ret

Note the magically transmogrifying immediate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19686 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 07:11:01 +00:00
Chris Lattner
167b10cba4 Finegrainify namespacification 
Add default impl of commuteInstruction
Add notes about ugly V9 code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19684 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 06:53:34 +00:00
Chris Lattner
8571637ee9 Codegen long >> 2 to this: 
foo:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %EDX, DWORD PTR [%ESP + 8]
        shrd %EAX, %EDX, 2
        sar %EDX, 2
        ret

instead of this:

test1:
        mov %ECX, DWORD PTR [%ESP + 4]
        shr %ECX, 2
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %EAX, %EDX
        shl %EAX, 30
        or %EAX, %ECX
        sar %EDX, 2
        ret

and long << 2 to this:

foo:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, DWORD PTR [%ESP + 8]
***     mov %EDX, %EAX
        shrd %EDX, %ECX, 30
        shl %EAX, 2
        ret

instead of this:

foo:
        mov %EAX, DWORD PTR [%ESP + 4]
        mov %ECX, %EAX
        shr %ECX, 30
        mov %EDX, DWORD PTR [%ESP + 8]
        shl %EDX, 2
        or %EDX, %ECX
        shl %EAX, 2
        ret

The extra copy (marked ***) can be eliminated when I teach the code generator
that shrd32rri8 is really commutative.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19681 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 06:18:43 +00:00
Chris Lattner
009b55b6f6 X86 shifts mask the amount. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19678 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-19 03:36:30 +00:00
Chris Lattner
477c931852 Code to handle FP_EXTEND is dead now. X86 doesn't support any data types to 
FP_EXTEND from!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19674 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 20:05:56 +00:00
Chris Lattner
3dd68151dc Remove more dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19673 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 19:50:08 +00:00
Chris Lattner
a7a4c0f7c4 The selection dag code handles the promotions from F32 to F64 for us, so we 
don't need to even think about F32 in the X86 code anymore.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19672 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 19:46:54 +00:00
Chris Lattner
b422aeac9e Fix 124.m88ksim. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19667 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 17:35:28 +00:00
Chris Lattner
811482a82b Do not emit loads multiple times, potentially in the wrong places. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19661 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 04:18:32 +00:00
Tanya Lattner
0111474bde Minor changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19660 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 04:15:41 +00:00
Chris Lattner
b71f8fc99d Eliminate bad assertions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19659 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 04:00:54 +00:00
Chris Lattner
4a108668df * Eliminate the TokenSet and just use the ExprMap for both tokens and values. 
* Insert some really pedantic assertions that will notice when we emit the
  same loads more than one time, exposing bugs.  This turns a miscompilation in
  bzip2 into a compile-fail.  yaay.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19658 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 03:51:59 +00:00
Chris Lattner
883c86f510 Rely on the code in MatchAddress to do this work. Otherwise we fail to 
match (X+Y)+(Z << 1), because we match the X+Y first, consuming the index
register, then there is no place to put the Z.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19652 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 02:25:52 +00:00
Chris Lattner
98a8ba0393 Fix a problem where probing for addressing modes caused expressions to be 
emitted too early.  In particular, this fixes
Regression/CodeGen/X86/regpressure.ll:regpressure3.

This also improves the 2nd basic block in 164.gzip:flush_block, which went from

.LBBflush_block_1:      # loopentry.1.i
        movzx %EAX, WORD PTR [dyn_ltree + 20]
        movzx %ECX, WORD PTR [dyn_ltree + 16]
        mov DWORD PTR [%ESP + 32], %ECX
        movzx %ECX, WORD PTR [dyn_ltree + 12]
        movzx %EDX, WORD PTR [dyn_ltree + 8]
        movzx %EBX, WORD PTR [dyn_ltree + 4]
        mov DWORD PTR [%ESP + 36], %EBX
        movzx %EBX, WORD PTR [dyn_ltree]
        add DWORD PTR [%ESP + 36], %EBX
        add %EDX, DWORD PTR [%ESP + 36]
        add %ECX, %EDX
        add DWORD PTR [%ESP + 32], %ECX
        add %EAX, DWORD PTR [%ESP + 32]
        movzx %ECX, WORD PTR [dyn_ltree + 24]
        add %EAX, %ECX
        mov %ECX, 0
        mov %EDX, %ECX

to

.LBBflush_block_1:      # loopentry.1.i
        movzx %EAX, WORD PTR [dyn_ltree]
        movzx %ECX, WORD PTR [dyn_ltree + 4]
        add %ECX, %EAX
        movzx %EAX, WORD PTR [dyn_ltree + 8]
        add %EAX, %ECX
        movzx %ECX, WORD PTR [dyn_ltree + 12]
        add %ECX, %EAX
        movzx %EAX, WORD PTR [dyn_ltree + 16]
        add %EAX, %ECX
        movzx %ECX, WORD PTR [dyn_ltree + 20]
        add %ECX, %EAX
        movzx %EAX, WORD PTR [dyn_ltree + 24]
        add %ECX, %EAX
        mov %EAX, 0
        mov %EDX, %EAX

... which results in less spilling in the function.

This change alone speeds up 164.gzip from 37.23s to 36.24s on apoc.  The
default isel takes 37.31s.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19650 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-18 01:06:26 +00:00
Chris Lattner
e9fe2bcac2 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19649 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 23:25:45 +00:00
Chris Lattner
869e0434ae Don't bother using max here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19647 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 23:02:13 +00:00
Chris Lattner
90d1be7eef Do not give token factor nodes outrageous weights 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19645 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 22:56:09 +00:00
Chris Lattner
5c65981a57 Two changes: 
1. Fold  [mem] += (1|-1) into inc [mem]/dec [mem] to save some icache space.
 2. Do not let token factor nodes prevent forming '[mem] op= val' folds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19643 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 22:10:42 +00:00
Chris Lattner
e10269ba30 Refactor load/op/store folding into it's own method, no functionality changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19641 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 19:25:26 +00:00
Chris Lattner
ae3ffba466 Fix a major regression last night that prevented us from producing [mem] op= reg 
operations.

The body of the if is less indented but unmodified in this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19638 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 17:49:14 +00:00
Chris Lattner
2a4e508281 Codegen this: 
int %foo(int %X) {
        %T = add int %X, 13
        %S = mul int %T, 3
        ret int %S
}

as this:

        mov %ECX, DWORD PTR [%ESP + 4]
        lea %EAX, DWORD PTR [%ECX + 2*%ECX + 39]
        ret

instead of this:

        mov %ECX, DWORD PTR [%ESP + 4]
        mov %EAX, %ECX
        add %EAX, 13
        imul %EAX, %EAX, 3
        ret


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19633 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 06:48:02 +00:00
Tanya Lattner
7a866d9a43 Added tmp instructions to preserve ssa. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19632 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 06:47:26 +00:00
Chris Lattner
4ff348befa Fix test/Regression/CodeGen/X86/2005-01-17-CycleInDAG.ll and 132.ijpeg. 
Do not fold a load into an operation if it will induce a cycle in the DAG.

Repeat after me: dAg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19631 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 06:26:58 +00:00
Chris Lattner
cb1aa8d772 Do not fold a load into a comparison that is used by more than one place. 
The comparison will probably be folded, so this is not ok to do.
This fixed 197.parser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19624 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 01:34:14 +00:00
Chris Lattner
c98279d371 Do not codegen 'xor bool, true' as 'not reg'. not reg inverts the upper bits 
of the bytereg.  This fixes yacr2, 300.twolf and probably others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19622 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 00:23:16 +00:00
Chris Lattner
4df0de975a Set up the shift and setcc types. 
If we emit a load because we followed a token chain to get to it, try to
fold it into its single user if possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19620 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-17 00:00:33 +00:00
Tanya Lattner
7600587e66 Added paramters to a few functions in order to allow me to change the functions to preserve SSA 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19615 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-16 08:51:10 +00:00
Chris Lattner
da2ce11407 * Adjust to changes in TargetLowering interfaces. 
* Remove custom promotion for bool and byte select ops.  Legalize now
  promotes them for us.
* Allow folding ConstantPoolIndexes into EXTLOAD's, useful for float immediates.
* Declare which operations are not supported better.
* Add some hacky code for TRUNCSTORE to pretend that we have truncstore
  for i16 types.  This is useful for testing promotion code because I can
  just remove 16-bit registers all together and verify that programs work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19614 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-16 07:34:08 +00:00
Chris Lattner
ccad8439e0 cycles_t -> CycleCount_t 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19604 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-16 04:20:30 +00:00
Reid Spencer
bdf6a39d1c Rename BUILD_* to PROJ_* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19592 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-16 02:21:29 +00:00
Tanya Lattner
5fd2ef1e43 Fixed a couple of instructions that broke SSA. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19587 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-16 02:14:17 +00:00
Chris Lattner
638559aaa3 Improve compatiblity with HPUX on Itanium, patch by Duraid Madina 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19586 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-16 01:31:31 +00:00
Chris Lattner
45554a61f2 Add a new target-independent code generator flag. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19567 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-15 06:00:32 +00:00
Chris Lattner
e9ef81dd2f Add support for truncstore and *extload. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19566 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-15 05:22:24 +00:00
Chris Lattner
7f2afac1dc Adjust to CopyFromREg changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19561 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 22:37:41 +00:00
Chris Lattner
3c70764907 Fix Regression/CodeGen/PowerPC/2005-01-14-UndefLong.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19557 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 20:22:02 +00:00
Chris Lattner
fbd4de1d9b Fix: Regression/CodeGen/PowerPC/2005-01-14-SetSelectCrash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19555 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-14 19:31:00 +00:00
Chris Lattner
18c2f13e0f Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19535 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 20:50:02 +00:00
Chris Lattner
1d50b7fa53 Codegen factor nodes more intelligently according to perceived register pressure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19532 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 19:56:00 +00:00
Chris Lattner
c35807155c Initial trivial (but stupid) codegen for this node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19529 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 18:01:36 +00:00
Chris Lattner
636e79a20f Add some really pedantic assertions to the load folding code. Fix a bunch 
of cases where we accidentally emitted a load folded once and unfolded
elsewhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19522 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-13 05:53:16 +00:00
Chris Lattner
a0bb692b27 We can only fold a load into an op if there is exactly one use of the value. 
Checking to see if the load has two uses is not equivalent, as the chain
value may have zero uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19518 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:38:26 +00:00
Chris Lattner
9bbd992eb1 Try both ways to fold an add together. This allows us to generate this code 
imul %EAX, %EAX, 400
        add %ECX, %EAX
        add %ESI, DWORD PTR [%ECX + 4*%EDX]
        inc %EDX
        cmp %EDX, 100

instead of this:

        imul %EAX, %EAX, 400
        add %ECX, %EAX
        mov %EAX, %EDX
        shl %EAX, 2
        add %ECX, %EAX
        add %ESI, DWORD PTR [%ECX]
        inc %EDX
        cmp %EDX, 100


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19513 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 18:08:53 +00:00
Chris Lattner
2b9378646d Fix a major miscompilation where we were overwriting the scale reg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19511 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 07:33:20 +00:00
Chris Lattner
48034fd9f1 Do not use the type of the RHS constant to determine the type of the operation. 
This fails for shifts because the constant is always 8 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19508 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 05:22:07 +00:00
Chris Lattner
a23ccfb124 Do not lose the offset from teh global when peephole optimizing instructions. 
This fixes FreeBench/pcompress


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19507 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 05:17:28 +00:00
Jeff Cohen
603fea9eb6 Fix C++ more compilatiom errors 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19504 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 04:29:05 +00:00
Chris Lattner
a56cea4495 Fix a compile error with VC++, which things that static const arrays need 
to be dynamically initialized. :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19503 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 04:23:22 +00:00
Chris Lattner
7dbcb75b15 Fix a bug that caused us to crash on povray. We weren't emitting an FP_REG_KILL into a block that had a successor with a FP PHI node. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19502 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 04:21:28 +00:00
Chris Lattner
e11a9a93a8 Print a load of a null pointer (in intel mode) like this: 
mov %AX, WORD PTR [0]

instead of like this:

        mov %AX, WORD PTR []


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19501 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 04:07:11 +00:00
Chris Lattner
9f2cb3da48 Print a load of a null pointer like this: 
movw 0, %ax

instead of like this:

        movw , %ax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19500 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 04:05:19 +00:00
Chris Lattner
085c9955ca Fix a crash compiling povray on UINT_TO_FP from i16. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19499 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 04:00:00 +00:00
Chris Lattner
4292830fe5 There are no [mem] op= reg instructions for FP, so remove their entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19496 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 03:16:09 +00:00
Chris Lattner
db8c368d7b Fix a bug where we didn't insert FP_REG_KILL instructions into MBB's that 
contain FP PHI nodes but no other FP defining instructions.  This fixes
183.equake


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19495 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 02:57:10 +00:00
Chris Lattner
afce4306ec Fold TRUNCATE (LOAD P) into a smaller load from P. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19494 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 02:19:06 +00:00
Chris Lattner
ef6806c979 Be more careful about order of arg evalution for CopyToReg nodes. This shrinks 
256.bzip2 from 7142 to 7103 lines of .s file.

Second, add initial support for folding loads into compares, though this code
is dynamically dead for now. :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19493 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 02:02:48 +00:00
Chris Lattner
7ea64f5d12 Fold some more [mem] op= val operators. This allows us to things like this 
several times in 256.bzip2:

        mov %EAX, DWORD PTR [%ESP + 204]
-       mov %EAX, DWORD PTR [%EAX]
-       or %EAX, 2097152
-       mov %ECX, DWORD PTR [%ESP + 204]
-       mov DWORD PTR [%ECX], %EAX
+       or DWORD PTR [%EAX], 2097152


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19492 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-12 01:28:00 +00:00
Chris Lattner
dbba22fa2a Fold loads into sign/zero extends. instead of: 
mov %AL, BYTE PTR [%EDX + l18_length_code]
  movzx %EAX, %AL

Emit:

  movzx %EAX, BYTE PTR [%EDX + l18_length_code]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19489 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 23:33:00 +00:00
Chris Lattner
837caa7223 Comment out debug code :) 
Select [mem] += Val operations.  For constants, we used to get:

  mov %ECX, -32768
  add %ECX, DWORD PTR [l4_match_start]
  mov DWORD PTR [l4_match_start], %ECX

Now we get:

  add DWORD PTR [l4_match_start], -32768

For other values we used to get:

  mov %EBP, %EDI   ;; because the add destroys the value
  add %EBP, DWORD PTR [l4_input_len]
  mov DWORD PTR [l4_input_len], %EBP

now we get:

  add DWORD PTR [l4_input_len], %EDI

Both of these use less registers than the alternative, are faster and smaller.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19488 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 23:21:30 +00:00
Chris Lattner
5f75d9a88c Handle the global address case here, not just the offset case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19487 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 22:58:43 +00:00
Chris Lattner
c4b6a78980 Treat int constants as not requiring a register, since they are almost always 
folded into an instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19486 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 22:29:12 +00:00
Chris Lattner
a5ade060db * Factor a bunch of binary operator cases into shared code. 
* Fold loads into Add, sub, and, or, xor and mul when possible.
* Codegen shl X, 1 as add X, X


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19483 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 21:19:59 +00:00
Chris Lattner
947d544e29 Fold multiplies by 3,5,9 into addressing modes when possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19480 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 19:37:02 +00:00
Chris Lattner
51a263434a Instead of generating stuff like this: 
mov %ECX, %EAX
        add %ECX, 32768
        mov %SI, WORD PTR [2*%ECX + l13_prev]

Generate this:

        mov %SI, WORD PTR [2*%ECX + l13_prev + 65536]

This occurs when you have a GEP instruction where an index is
"something + imm".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19472 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 06:36:20 +00:00
Chris Lattner
31805bf2b6 Implement MEMCPY natively in terms of rep movs* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19468 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 06:19:26 +00:00
Chris Lattner
989de030c4 Implement memset -> rep stos* 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19467 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 06:14:36 +00:00
Chris Lattner
795069dd38 Announce that we don't support mem ops yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19466 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 05:57:36 +00:00
Chris Lattner
a95589be3f Teach the address selector to make 'reg+reg' addressing modes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19457 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 04:40:19 +00:00
Chris Lattner
d4dab929d8 Emit NOT instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19455 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 04:31:30 +00:00
Chris Lattner
6c07aee7c9 Fix a bug emitting branches that broke a lot of programs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19452 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 04:06:27 +00:00
Chris Lattner
ef7ba0756b Be more careful where we set ContainsFPCode. We were missing a set in the 
int -> FP casting code.  Note that we don't have to set it for FP operations
that take FP values as operands: whatever produces the FP value will set the
flag.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19451 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 03:50:45 +00:00
Chris Lattner
a3aa2e2882 Fix a major bug in setcc/cmov folding, where we accidentally 
inverted the sense of the comparison.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19450 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 03:37:59 +00:00
Chris Lattner
1133309e57 Take register pressure into account when we have to decide whether to 
evaluate the LHS or the RHS of an operation first.  This causes good things
to happen.  For example, instead of compiling a loop to this:

.LBBstrength_result7_1: # loopentry
        movl 16(%esp), %edi
        movl (%edi), %edi             ;;; LOAD
        movl (%ecx), %ebx
        movl $2, (%eax,%ebx,4)
        movl (%edx), %ebx
        movl %esi, %ebp
        addl $21, %ebp
        addl $42, %esi
        cmpl $0, %edi                 ;;; USE
        cmovne %esi, %ebp
        cmpl %ebp, %ebx
        movl %ebp, %esi
        jg .LBBstrength_result7_1

We now compile it to this:

.LBBstrength_result7_1: # loopentry
        movl %edi, %ebx
        addl $42, %ebx
        addl $21, %edi
        movl (%ecx), %ebp              ;; LOAD
        cmpl $0, %ebp                  ;; USE
        cmovne %ebx, %edi
        movl (%edx), %ebx
        movl $2, (%eax,%ebx,4)
        movl (%esi), %ebx
        cmpl %edi, %ebx
        jg .LBBstrength_result7_1

Which reduces register pressure enough (in this case) to avoid spilling in the
loop.

As another example, consider the CodeGen/X86/regpressure.ll testcase.  We
used to generate this code for both cases:

regpressure1:
        subl $32, %esp
        movl %esi, 12(%esp)
        movl %edi, 8(%esp)
        movl %ebx, 4(%esp)
        movl %ebp, (%esp)
        movl 36(%esp), %ecx
        movl (%ecx), %eax
        movl 4(%ecx), %edx
        movl %edx, 24(%esp)
        movl 8(%ecx), %edx
        movl %edx, 16(%esp)
        movl 12(%ecx), %edx
        movl 16(%ecx), %esi
        movl 20(%ecx), %edi
        movl 24(%ecx), %ebx
        movl %ebx, 28(%esp)
        movl 28(%ecx), %ebx
        movl 32(%ecx), %ebp
        movl %ebp, 20(%esp)
        movl 36(%ecx), %ecx
        imull 24(%esp), %eax
        imull 16(%esp), %eax
        imull %edx, %eax
        imull %esi, %eax
        imull %edi, %eax
        imull 28(%esp), %eax
        imull %ebx, %eax
        imull 20(%esp), %eax
        imull %ecx, %eax
        movl (%esp), %ebp
        movl 4(%esp), %ebx
        movl 8(%esp), %edi
        movl 12(%esp), %esi
        addl $32, %esp
        ret

This code is basically trying to do all of the loads first, then execute all
of the multiplies.  Because we run out of registers, lots of spill code happens.
We now generate this code for both cases:

regpressure1:
        movl 4(%esp), %ecx
        movl (%ecx), %eax
        movl 4(%ecx), %edx
        imull %edx, %eax
        movl 8(%ecx), %edx
        imull %edx, %eax
        movl 12(%ecx), %edx
        imull %edx, %eax
        movl 16(%ecx), %edx
        imull %edx, %eax
        movl 20(%ecx), %edx
        imull %edx, %eax
        movl 24(%ecx), %edx
        imull %edx, %eax
        movl 28(%ecx), %edx
        imull %edx, %eax
        movl 32(%ecx), %edx
        imull %edx, %eax
        movl 36(%ecx), %ecx
        imull %ecx, %eax
        ret

which is much nicer (when we fold loads into the muls it will be even better).
The old instruction selector used to produce the good code for regpressure1
but not for regpressure2, as it depended on the order of operations in the
LLVM code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19449 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-11 03:11:44 +00:00
Chris Lattner
24aad1b0c1 Fold setcc instructions into selects. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19438 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-10 22:10:13 +00:00
Chris Lattner
57fbfb5879 Add conditional moves for the parity flag. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19437 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-10 22:09:33 +00:00
Chris Lattner
a13d3236d1 Implement 8-bit multiply for X86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19435 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-10 20:55:48 +00:00
Chris Lattner
bd9f0eefb2 Codegen (Reg|imm)+&GV as an LEA, because we cannot put it into the immediate field 
of an ADDri (due to current restrictions on MachineOperand :( ).  This allows
us to generate:

        leal Data+16000, %edx

instead of:

        movl $Data, %edx
        addl $16000, %edx


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19420 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-09 20:20:29 +00:00
Chris Lattner
250208587d Fix copy and pasto's for FP -> Int. This fixes fldry 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19418 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-09 19:49:59 +00:00
Chris Lattner
590d800a12 Initial implementation of FP->INT and INT->FP casts 
Also, fix zero_extend from bool to i8, which fixes Shootout/objinst.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19414 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-09 18:52:44 +00:00
Chris Lattner
6e7c47c12d Fix a subtle bug involving constant expr casts from int to fp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19410 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-09 01:49:29 +00:00
Chris Lattner
1482458b23 Implement varargs and returnaddress/frameaddress intrinsics. With this 
patch, all of SingleSource/UnitTests passes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19408 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-09 00:01:27 +00:00
Chris Lattner
b0802651bf Okay 15th time is the charm. Looking at the vector size is useless as it 
gets clobbered by a previous statement.  This fixes all calls finally.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19399 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 20:51:36 +00:00
Chris Lattner
6cc70ef0f9 Okay, my off by one was actually off by two. This fixes Generic/2003-07-07-BadLongConst.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19398 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 20:39:31 +00:00
Chris Lattner
ce45d65d9a Fix off by one error 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19396 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 20:31:34 +00:00
Chris Lattner
5188ad735c Adjust to changes in LowerCallTo interface 
Minor bugfixes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19376 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 19:28:19 +00:00
Chris Lattner
8c92628d1c Wrap long line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19367 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 06:59:50 +00:00
Chris Lattner
7ab65934a0 The X86 instruction selector already handles codegen of: 
store float 123.45, float* %P

as an integer store.  This adds handling of float immediate stores as integers
for arguments passed function calls.

This is now tested by CodeGen/X86/store-fp-constant.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19364 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-08 05:45:24 +00:00
Chris Lattner
18ad19488d Allow the selection-dag based selector to be diabled with -disable-pattern-isel. 
For now, this is the default, as the current selector is missing some big pieces.
To enable the new selector, pass -disable-pattern-isel=false to llc or lli.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19335 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-07 07:50:50 +00:00
Chris Lattner
8acb1ba04d Reimplementation of the X86 pattern isel. This is still missing many large 
pieces, but can already do amazing things in some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19334 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-07 07:49:41 +00:00
Chris Lattner
d844d0128a This file is now dead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19333 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-07 07:49:05 +00:00
Chris Lattner
95cdb36714 Add a new prototype 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19332 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-07 07:48:33 +00:00
Chris Lattner
6ac95f9679 Codegen -1 and -0.0 more efficiently. This implements CodeGen/X86/negatize_zero.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19313 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-06 21:19:16 +00:00
Jeff Cohen
d01f65aea1 Fix CBE code so that it compiles with VC++. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19303 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-06 04:21:49 +00:00
Chris Lattner
5384b38ccc 1. If a double FP constant must be put into a constant pool, but it can be 
precisely represented as a float, put it into the constant pool as a
   float.
2. Use the cbw/cwd/cdq instructions instead of an explicit SAR for signed
   division.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19291 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-05 16:30:14 +00:00
Chris Lattner
0539313fe5 Minor optimization to allocate R8 registers in a better order. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19289 91177308-0d34-0410-b5e6-96231b3b80d8
 2005-01-05 16:09:16 +00:00