Evan Cheng 2c33915628 Cmp peephole optimization isn't always safe for signed arithmetics. ... int tries = INT_MAX; while (tries > 0) { tries--; } The check should be: subs r4, #1 cmp r4, #0 bgt LBB0_1 The subs can set the overflow V bit when r4 is INT_MAX+1 (which loop canonicalization apparently does in this case). cmp #0 would have cleared it while not changing the N and Z bits. Since BGT is dependent on the V bit, i.e. (N == V) && !Z, it is not safe to eliminate the cmp #0. rdar://9172742 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128179 91177308-0d34-0410-b5e6-96231b3b80d8		2011-03-23 22:52:04 +00:00
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Alpha
ARM	Cmp peephole optimization isn't always safe for signed arithmetics.	2011-03-23 22:52:04 +00:00
Blackfin
CBackend
CellSPU	Roll r127459 back in:	2011-03-11 21:52:04 +00:00
CPP
Generic
MBlaze
Mips	Revert "Re-enable test and hope to silence the buildbots", still broken.	2011-03-09 22:48:46 +00:00
MSP430
PowerPC	Fix mistyped CHECK lines.	2011-03-09 22:07:31 +00:00
PTX	ptx: add analyze/insert/remove branch	2011-03-22 14:12:00 +00:00
SPARC
SystemZ
Thumb	Roll r127459 back in:	2011-03-11 21:52:04 +00:00
Thumb2	Roll r127459 back in:	2011-03-11 21:52:04 +00:00
X86	PR9535: add support for splitting and scalarizing vector ISD::FP_ROUND.	2011-03-23 22:18:48 +00:00
XCore	Add XCore intrinsic for setpsc.	2011-03-17 18:42:05 +00:00