the -sse* options (to avoid misleading people).
Also, the stack alignment of the target doesn't depend on whether SSE is
eventually implemented, so remove a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16860 91177308-0d34-0410-b5e6-96231b3b80d8
which prevented setcc's from being folded into branches. It appears that
conditional branchinst's CC operand is actually operand(2), not operand(0)
as we might expect. :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16859 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not lead dangling dead constants prevent optimization
* Iterate global optimization while we're making progress.
These changes allow us to be more aggressive, handling cases like
GlobalOpt/iterate.llx without a problem (turning it into 'ret int 0').
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16857 91177308-0d34-0410-b5e6-96231b3b80d8
optimizations to trigger much more often. This allows the elimination of
several dozen more global variables in Programs/External. Note that we only
do this for non-constant globals: constant globals will already be optimized
out if the accesses to them permit it.
This implements Transforms/GlobalOpt/globalsra.llx
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16842 91177308-0d34-0410-b5e6-96231b3b80d8
version of the configure script. This is an early commit of the automake
support so that automake support can be tested on multiple platforms. Many
additional Makefile.am need to be added to LLVM before this is of any use.
Please wait until automake support is announced on llvmdev list before
using the --with-automake option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16837 91177308-0d34-0410-b5e6-96231b3b80d8
of one or more 1 bits (may wrap from least significant bit to most
significant bit) as the rlwinm rather than andi., andis., or some longer
instructons sequence.
int andn4(int z) { return z & -4; }
int clearhi(int z) { return z & 0x0000FFFF; }
int clearlo(int z) { return z & 0xFFFF0000; }
int clearmid(int z) { return z & 0x00FFFF00; }
int clearwrap(int z) { return z & 0xFF0000FF; }
_andn4:
rlwinm r3, r3, 0, 0, 29
blr
_clearhi:
rlwinm r3, r3, 0, 16, 31
blr
_clearlo:
rlwinm r3, r3, 0, 0, 15
blr
_clearmid:
rlwinm r3, r3, 0, 8, 23
blr
_clearwrap:
rlwinm r3, r3, 0, 24, 7
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16832 91177308-0d34-0410-b5e6-96231b3b80d8
1. Fix an illegal argument to getClassB when deciding whether or not to
sign extend a byte load.
2. Initial addition of isLoad and isStore flags to the instruction .td file
for eventual use in a scheduler.
3. Rewrite of how constants are handled in emitSimpleBinaryOperation so
that we can emit the PowerPC shifted immediate instructions far more
often. This allows us to emit the following code:
int foo(int x) { return x | 0x00F0000; }
_foo:
.LBB_foo_0: ; entry
; IMPLICIT_DEF
oris r3, r3, 15
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16826 91177308-0d34-0410-b5e6-96231b3b80d8
loading a 32bit constant into a register whose low halfword is all zeroes.
We now omit the ori after the lis for the following C code:
int bar(int y) { return y * 0x00F0000; }
_bar:
.LBB_bar_0: ; entry
; IMPLICIT_DEF
lis r2, 15
mullw r3, r3, r2
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16825 91177308-0d34-0410-b5e6-96231b3b80d8
a map. This caused problems if a later object happened to be allocated at
the free'd object's address.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16813 91177308-0d34-0410-b5e6-96231b3b80d8
exponential behavior (bork!). This patch processes stuff with an
explicit SCC finder, allowing the algorithm to be more clear,
efficient, and also (as a bonus) correct! This gets us back to taking
0.6s to disassemble my horrible .bc file that previously took something
> 30 mins.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16811 91177308-0d34-0410-b5e6-96231b3b80d8
