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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 | f259efde4730f1c8ba33f6a16f9b93c1e01165f5 (patch) | |
| tree | edb19bf7ab8844339775d7539a1fcd703016d833 /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | d84dbb5cafc429076b6925117783ce37358d3dbd (diff) | |
| download | llvm-f259efde4730f1c8ba33f6a16f9b93c1e01165f5.zip llvm-f259efde4730f1c8ba33f6a16f9b93c1e01165f5.tar.gz llvm-f259efde4730f1c8ba33f6a16f9b93c1e01165f5.tar.bz2 | |
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
llvm-svn: 111221
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions