http://llvm.org/bugs/show_bug.cgi?id=16588
Bug ID: 16588
Summary: Support unqualified btr, bts
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
I happened to notice that linux.git uses plenty of btr and bts
instructions (not btrl, btrw, btsl, btsw). For examples, see
arch/x86/include/asm/bitops.h. LLVM barfs on these due to ambiguity,
while GNU as is fine with them. Surely, there must be architectures
where the w/l variant is unavailable? LLVM must support those
architectures, no?
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