[llvm-bugs] [Bug 35129] ptest not used for pointer comparison (but is for integer)
via llvm-bugs
llvm-bugs at lists.llvm.org
Wed Jun 24 15:40:31 PDT 2020
https://bugs.llvm.org/show_bug.cgi?id=35129
listmail at philipreames.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #6 from listmail at philipreames.com ---
Simon, I just tried to test this on most recent LLC, and still see code
differences between the original examples posted. These are both examples of
not(anyof) patterns, the only difference between them is the use of pointer vs
integer comparisons. We really should be producing the same code for these two
examples.
test_opt:
vpxor %xmm1, %xmm1, %xmm1
vpcmpeqq %xmm1, %xmm0, %xmm1
vmovmskpd %xmm1, %eax
testb %al, %al
je .LBB0_2
test_sidestep:
vptest %xmm0, %xmm0
je .LBB1_2
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