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c4b6768db4
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22756 Commits

Author SHA1 Message Date
Dan Gohman
c4b6768db4 Remove the code from CodeGenPrepare that moved getresult instructions 
to the block that defines their operands. This doesn't work in the
case that the operand is an invoke, because invoke is a terminator
and must be the last instruction in a block.

Replace it with support in SelectionDAGISel for copying struct values
into sequences of virtual registers.

llvm-svn: 50279
 2008-04-25 18:27:55 +00:00
Evan Cheng
0fe99f024d Fix MMX_MOVQ2DQrr pattern. It's illegal to do a bitconvert from a smaller type to a larger one. 
llvm-svn: 50278
 2008-04-25 18:19:54 +00:00
Nate Begeman
f4adf0f05f Pull the code to perform an INSERT_VECTOR_ELT in memory out into its own 
function, and then use it to fix a bug in SplitVectorOp that expected inserts
to always have constant insertion indices.

llvm-svn: 50273
 2008-04-25 18:07:40 +00:00
Nate Begeman
928566cbfe Feedback from chris 
llvm-svn: 50271
 2008-04-25 17:45:52 +00:00
Chris Lattner
81742d7a8f add a note 
llvm-svn: 50267
 2008-04-25 17:25:00 +00:00
Evan Cheng
bbbe14502f 80 col violation. 
llvm-svn: 50266
 2008-04-25 17:21:40 +00:00
Nick Lewycky
1f831c0f57 Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989 
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.

llvm-svn: 50265
 2008-04-25 16:53:59 +00:00
Evan Cheng
37ca5de3b7 Not checking for intrinsics which do not have a chain operand. 
llvm-svn: 50260
 2008-04-25 08:55:28 +00:00
Evan Cheng
e177dc6696 - Switch from std::set to SmallPtrSet. 
- Add comments.

llvm-svn: 50259
 2008-04-25 08:22:20 +00:00
Evan Cheng
39ae78cadb MMX argument passing fixes: 
On Darwin / Linux x86-32, v8i8, v4i16, v2i32 values are passed in MM[0-2].                                                                                                                                      
On Darwin / Linux x86-32, v1i64 values are passed in memory.                                                                                                                                                    
On Darwin x86-64, v8i8, v4i16, v2i32 values are passed in XMM[0-7].                                                                                                                                     
On Darwin x86-64, v1i64 values are passed in 64-bit GPRs.

llvm-svn: 50257
 2008-04-25 07:56:45 +00:00
Nate Begeman
26b6f640a1 Teach the PruningFunctionCloner how to look through loads with 
ConstantExpression GEPs pointing into constant globals.

llvm-svn: 50256
 2008-04-25 06:37:06 +00:00
Chris Lattner
8c9f6c929a Loosen up an assertion to allow intrinsics. I really have no 
idea what this code (findNonImmUse) does, so I'm only guessing 
that this is the right thing.  It would be really really nice
if this had comments and perhaps switched to SmallPtrSet
(hint hint) :)

This fixes rdar://5886601, a crash on gcc.target/i386/sse4_1-pblendw.c

llvm-svn: 50252
 2008-04-25 05:13:01 +00:00
Chris Lattner
1a6268f776 Don't infininitely thread branches when a threaded edge 
goes back to the block, e.g.:

  Threading edge through bool from 'bb37.us.thread3829' to 'bb37.us' with cost: 1, across block:

bb37.us:		; preds = %bb37.us.thread3829, %bb37.us, %bb33
	%D1361.1.us = phi i32 [ %tmp36, %bb33 ], [ %D1361.1.us, %bb37.us ], [ 0, %bb37.us.thread3829 ]		; <i32> [#uses=2]
	%tmp39.us = icmp eq i32 %D1361.1.us, 0		; <i1> [#uses=1]
	br i1 %tmp39.us, label %bb37.us, label %bb42.us

llvm-svn: 50251
 2008-04-25 04:12:29 +00:00
Gordon Henriksen
c440737166 PR2202: LLVMCreateInterpreter creates a JIT 
Applying fix by Frits van Bommel.

llvm-svn: 50249
 2008-04-25 02:52:30 +00:00
Evan Cheng
484060ba4a Fix bug in x86 memcpy / memset lowering. If there are trailing bytes not handled by rep instructions, a new memcpy / memset is introduced for them. However, since source / destination addresses are already adjusted, their offsets should be zero. 
llvm-svn: 50239
 2008-04-25 00:26:43 +00:00
Evan Cheng
c532dca878 Adjust inline cost computation to be less aggressive. 
llvm-svn: 50222
 2008-04-24 18:42:47 +00:00
Evan Cheng
1a97cb159e - Check if a register is livein before removing it. It may have already been removed. 
- Do not iterate over SmallPtrSet, the order of iteration is not deterministic.

llvm-svn: 50209
 2008-04-24 09:06:33 +00:00
Chris Lattner
a646a59205 code restructuring, not functionality change. 
llvm-svn: 50203
 2008-04-24 00:21:50 +00:00
Chris Lattner
10ffed0ed0 Don't replace multiple result of calls with undef, 
sccp tracks getresult values, not call values in this
case.

llvm-svn: 50202
 2008-04-24 00:19:54 +00:00
Chris Lattner
8c6e641cf4 code cleanup, no functionality change. 
llvm-svn: 50201
 2008-04-24 00:16:28 +00:00
Chris Lattner
be35a0c224 Split some code out of the main SimplifyCFG loop into its own function. 
Fix said code to handle merging return instructions together correctly
when handling multiple return values.

llvm-svn: 50199
 2008-04-24 00:01:19 +00:00
Dan Gohman
6054efc488 Make these variables static. 
llvm-svn: 50196
 2008-04-23 23:15:23 +00:00
Anton Korobeynikov
ac6f6045bb Drop dead includes 
llvm-svn: 50192
 2008-04-23 22:44:03 +00:00
Anton Korobeynikov
361e5f9eee Adjust option names for C++ backend 
llvm-svn: 50190
 2008-04-23 22:37:03 +00:00
Anton Korobeynikov
193b7db7c7 First step of implementing PR1538: move llvm2cpp logic to new 'target' 
llvm-svn: 50189
 2008-04-23 22:29:24 +00:00
Dan Gohman
5df2f2c2e7 Initial CBE support for multiple return values. 
llvm-svn: 50187
 2008-04-23 21:49:29 +00:00
Chris Lattner
50069efc7a tighten up verifier checks which missed cases where 
return instrs operands didn't match up with function results.

llvm-svn: 50182
 2008-04-23 20:33:41 +00:00
Dan Gohman
37f4dc9ab4 Use isa instead of dyn_cast. 
llvm-svn: 50181
 2008-04-23 20:25:16 +00:00
Dan Gohman
afa475f207 Add support to codegen for getresult instructions with undef operands. 
llvm-svn: 50180
 2008-04-23 20:21:29 +00:00
Devang Patel
88251a96f1 Check type instead of no. of operands. 
llvm-svn: 50179
 2008-04-23 20:18:29 +00:00
Dan Gohman
6de65a742d Allow llvm-as to parse a getresult with an undef operand. 
llvm-svn: 50175
 2008-04-23 20:11:27 +00:00
Dale Johannesen
d70ea13581 Rewrite previous patch to suit Chris's preference. 
llvm-svn: 50174
 2008-04-23 18:34:37 +00:00
Anton Korobeynikov
74178d02d1 Unbreak JIT 
llvm-svn: 50173
 2008-04-23 18:26:03 +00:00
Anton Korobeynikov
4b572e0f73 Fix typo 
llvm-svn: 50169
 2008-04-23 18:24:25 +00:00
Anton Korobeynikov
372e69e652 Only allow increase of max alignment value 
llvm-svn: 50168
 2008-04-23 18:23:50 +00:00
Anton Korobeynikov
47a8e6d7a9 Be over-conservative: scan for all used virtual registers and calculate maximal stack alignment in assumption, that there will be spill of vector register. 
llvm-svn: 50167
 2008-04-23 18:23:30 +00:00
Anton Korobeynikov
e7754f758b Add X86 Maximal Stack Alignment Calculator Pass before RA 
llvm-svn: 50166
 2008-04-23 18:23:05 +00:00
Anton Korobeynikov
b1ad6979dc Add facility for pre-RA passes 
llvm-svn: 50165
 2008-04-23 18:22:28 +00:00
Anton Korobeynikov
5e735f1fd2 Use precomputed value, if any 
llvm-svn: 50164
 2008-04-23 18:21:50 +00:00
Anton Korobeynikov
158f614c67 Do proper book-keeping of offsets and prologue/epilogue code for stack realignment 
llvm-svn: 50163
 2008-04-23 18:21:27 +00:00
Anton Korobeynikov
1f07315f47 If stack realignment is used - incoming args will use EBP as base register and locals - ESP 
llvm-svn: 50162
 2008-04-23 18:21:02 +00:00
Anton Korobeynikov
5079553b9d Eastimate required stack alignment early, so we can decide, whether we will need frame pointer or not 
llvm-svn: 50161
 2008-04-23 18:20:17 +00:00
Anton Korobeynikov
197eca0b2d Cleanup 
llvm-svn: 50160
 2008-04-23 18:19:47 +00:00
Anton Korobeynikov
492641d67f Cleanup 
llvm-svn: 50159
 2008-04-23 18:19:23 +00:00
Anton Korobeynikov
87325bfdf5 Simplify 
llvm-svn: 50158
 2008-04-23 18:18:36 +00:00
Anton Korobeynikov
73935826d4 Make stack alignment options global for all targets 
llvm-svn: 50157
 2008-04-23 18:18:10 +00:00
Anton Korobeynikov
6a59c959ca Provide option for enabling-disabling stack realignment 
llvm-svn: 50156
 2008-04-23 18:17:11 +00:00
Anton Korobeynikov
fc59ae78e0 Disable stack realignment for functions with dynamic-sized alloca's 
llvm-svn: 50155
 2008-04-23 18:16:43 +00:00
Anton Korobeynikov
11851230a9 Provide ABI-correct stack alignment 
llvm-svn: 50154
 2008-04-23 18:16:16 +00:00
Anton Korobeynikov
7e6850d1a1 Provide convenient helpers for some operations 
llvm-svn: 50153
 2008-04-23 18:15:48 +00:00