diff options
| -rw-r--r-- | lib/Target/X86/README.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index af73658bb3..7705c1ba31 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -1532,3 +1532,23 @@ _test: ret This should just fldl directly from the input stack slot. + +//===---------------------------------------------------------------------===// + +This code: +int foo (int x) { return (x & 65535) | 255; } + +Should compile into: + +_foo: + movzwl 4(%esp), %eax + orb $-1, %al ;; 'orl 255' is also fine :) + ret + +instead of: +_foo: + movl $255, %eax + orl 4(%esp), %eax + andl $65535, %eax + ret + |