https://llvm.org/bugs/show_bug.cgi?id=27472
Bug ID: 27472
Summary: llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp:370:Mis
matching assignment and comparison
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
[trunk/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp:370] ->
[trunk/llvm/lib/Target/X86/Utils/X86ShuffleDecode.cpp:371]: (style) Mismatching
assignment and comparison, comparison 'PermuteOp==4' is always false.
Source code is
uint64_t PermuteOp = (M >> 5) & 0x3;
if (PermuteOp == 4) {
If something is masked with 0x3, then it can never be equal to 4.
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