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| author | Bill Wendling <isanbard@gmail.com> | 2009-10-27 22:43:24 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2009-10-27 22:43:24 +0000 |
| commit | 2974f63cb573e18ffee4afb70e34488ae3f0966a (patch) | |
| tree | ad4469fbbd43b49dcafa3097f354327ac8d2ecb2 /llvm | |
| parent | cd4d148040f8c6cfc9489646843609ffd35ee45b (diff) | |
| download | bcm5719-llvm-2974f63cb573e18ffee4afb70e34488ae3f0966a.tar.gz bcm5719-llvm-2974f63cb573e18ffee4afb70e34488ae3f0966a.zip | |
Note corrected.
llvm-svn: 85332
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Target/X86/README.txt | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/README.txt b/llvm/lib/Target/X86/README.txt index 75dde2d28aa..876bb65acdd 100644 --- a/llvm/lib/Target/X86/README.txt +++ b/llvm/lib/Target/X86/README.txt @@ -1955,12 +1955,13 @@ information to add the "lock" prefix. //===---------------------------------------------------------------------===// -int func(int a, int b) { if (a & 0x80) b |= 0x80; else b &= 0x80; return b; } +int func(int a, int b) { if (a & 0x80) b |= 0x80; else b &= ~0x80; return b; } Current: + movb %sil, %al - andb $-128, %sil + andb $127, %sil orb $-128, %al testb %dil, %dil js LBB1_2 @@ -1968,11 +1969,12 @@ Current: LBB1_2: movsbl %al, %eax + Better: movl %esi, %eax orl $-128, %eax - andl $-128, %esi + andl $127, %esi testb %dil, %dil cmovns %esi, %eax movsbl %al,%eax |
