1ddc6ab1a9
Only the most conservative of the DAG patterns matched, leaving GISel with "dmb ish" everywhere which is inefficient.
23 lines
679 B
LLVM
23 lines
679 B
LLVM
; RUN: llc -mtriple=aarch64-linux-gnu %s -o - | FileCheck %s --check-prefix=LINUX
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; RUN: llc -mtriple=aarch64-apple-ios %s -o - | FileCheck %s --check-prefix=IOS
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; RUN: llc -mtriple=aarch64-apple-ios %s -o - -global-isel | FileCheck %s --check-prefix=IOS
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; RUN: llc -mtriple=aarch64-linux-gnueabihf %s -filetype=obj -o %t
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; RUN: llvm-objdump -d %t | FileCheck %s --check-prefix=OBJ
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; OBJ-NOT: dmb
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define void @fence_singlethread() {
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; LINUX-LABEL: fence_singlethread:
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; LINUX-NOT: dmb
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; LINUX: // COMPILER BARRIER
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; LINUX-NOT: dmb
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; IOS-LABEL: fence_singlethread:
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; IOS-NOT: dmb
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; IOS: ; COMPILER BARRIER
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; IOS-NOT: dmb
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fence syncscope("singlethread") seq_cst
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ret void
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}
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