ed4194bb8d
This will result in larger atomic operations getting expanded to `__atomic_*` libcalls via AtomicExpandPass, which matches what Clang already does in the frontend.
12 lines
355 B
LLVM
12 lines
355 B
LLVM
; RUN: llc -mtriple=x86_64 -mattr=cx16 < %s | FileCheck %s
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; Atomics larger than 128-bit are unsupported, and emit libcalls.
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define void @test(ptr %a) nounwind {
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; CHECK-LABEL: test:
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; CHECK: callq __atomic_load
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; CHECK: callq __atomic_store
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%1 = load atomic i256, ptr %a seq_cst, align 32
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store atomic i256 %1, ptr %a seq_cst, align 32
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ret void
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}
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