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llvm-mirror/test/CodeGen/X86/cmpxchg16b.ll
Matthias Braun f7935a3f63 X86: Do not use llc -march in tests.
`llc -march` is problematic because it only switches the target
architecture, but leaves the operating system unchanged. This
occasionally leads to indeterministic tests because the OS from
LLVM_DEFAULT_TARGET_TRIPLE is used.

However we can simply always use `llc -mtriple` instead. This changes
all the tests to do this to avoid people using -march when they copy and
paste parts of tests.

See also the discussion in https://reviews.llvm.org/D35287

llvm-svn: 309774
2017-08-02 00:28:10 +00:00

13 lines
321 B
LLVM

; RUN: llc < %s -mtriple=x86_64-- -mcpu=core2 | FileCheck %s
; Basic 128-bit cmpxchg
define void @t1(i128* nocapture %p) nounwind ssp {
entry:
; CHECK: movl $1, %ebx
; CHECK: lock cmpxchg16b
%r = cmpxchg i128* %p, i128 0, i128 1 seq_cst seq_cst
ret void
}
; FIXME: Handle 128-bit atomicrmw/load atomic/store atomic