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| author | Evan Cheng <evan.cheng@apple.com> | 2010-08-17 01:20:36 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-08-17 01:20:36 +0000 |
| commit | 97b9b97853d7e4fbb5c8460ef28126013c76e9a9 (patch) | |
| tree | 00177661907fa80d2ee615063908e042e57911b9 /lib/CodeGen/LocalStackSlotAllocation.cpp | |
| parent | 922157c83440e0197e7fd962cf7030491a8069b1 (diff) | |
PHI elimination should not break back edge. It can cause some significant code placement issues. rdar://8263994
good:
LBB0_2:
mov r2, r0
. . .
mov r1, r2
bne LBB0_2
bad:
LBB0_2:
mov r2, r0
. . .
@ BB#3:
mov r1, r2
b LBB0_2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111221 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LocalStackSlotAllocation.cpp')
0 files changed, 0 insertions, 0 deletions