https://bugs.llvm.org/show_bug.cgi?id=50811
Bug ID: 50811
Summary: [alias] Missing optimization for __restrict
Product: libraries
Version: 11.0
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Global Analyses
Assignee: unassignedb...@nondot.org
Reporter: zhongyu...@tom.com
CC: llvm-bugs@lists.llvm.org
base on https://gcc.godbolt.org/, I test the following simple case with newest
x86-64 clang 12.0.0， foo don't return false directly even with -O3 option.
int foo (int * __restrict a, int * __restrict b)
{
return a==b;
}
==== x86-64 clang 12.0.0 -O3 -S -g0 ============
foo(int*, int*): # @foo(int*, int*)
.cfi_startproc
xor eax, eax
cmp rdi, rsi
sete al
ret
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