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llvm-svn: 34202
This commit is contained in:
Chris Lattner 2007-02-12 20:26:34 +00:00
parent 7b47556f5c
commit 216d889852
1 changed files with 29 additions and 0 deletions
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29
lib/Target/X86/README.txt
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@ -868,3 +868,32 @@ _f2:
//===---------------------------------------------------------------------===//
This code:
void test(int X) {
if (X) abort();
}
is currently compiled to (with -static):
_test:
subl $12, %esp
cmpl $0, 16(%esp)
jne LBB1_1 #cond_true
addl $12, %esp
ret
LBB1_1: #cond_true
call L_abort$stub
It would be better to produce:
_test:
subl $12, %esp
cmpl $0, 16(%esp)
jne L_abort$stub
addl $12, %esp
ret
This can be applied to any no-return function call that takes no arguments etc.
//===---------------------------------------------------------------------===//