https://llvm.org/bugs/show_bug.cgi?id=28175
Bug ID: 28175
Summary: AVX512F lowers zext from i1 to i64 through a k-mask
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: mku...@google.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
For
long long bar();
long long foo(bool i, int j) {
if (j)
return bar();
return i;
}
With -mavx512f, we get:
foo(bool, int): # @foo(bool, int)
testl %esi, %esi
je .LBB0_1
jmp bar() # TAILCALL
.LBB0_1:
andl $1, %edi
kmovw %edi, %k0
kmovw %k0, %eax
andq $1, %rax
retq
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