3fdc257d6a
Both AArch64 and ARM support llvm.<arch>.thread.pointer intrinsics that just return the thread pointer. I have a pending patch that does the same for SystemZ (D19054), and there are many more targets that could benefit from one. This patch merges the ARM and AArch64 intrinsics into a single target independent one that will also be used by subsequent targets. Differential Revision: http://reviews.llvm.org/D19098 llvm-svn: 266818
21 lines
604 B
LLVM
21 lines
604 B
LLVM
; RUN: opt -safe-stack -S -mtriple=aarch64-linux-android < %s -o - | FileCheck %s
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define void @foo() nounwind uwtable safestack {
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entry:
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; CHECK: %[[TP:.*]] = call i8* @llvm.thread.pointer()
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; CHECK: %[[SPA0:.*]] = getelementptr i8, i8* %[[TP]], i32 72
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; CHECK: %[[SPA:.*]] = bitcast i8* %[[SPA0]] to i8**
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; CHECK: %[[USP:.*]] = load i8*, i8** %[[SPA]]
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; CHECK: %[[USST:.*]] = getelementptr i8, i8* %[[USP]], i32 -16
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; CHECK: store i8* %[[USST]], i8** %[[SPA]]
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%a = alloca i8, align 8
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call void @Capture(i8* %a)
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; CHECK: store i8* %[[USP]], i8** %[[SPA]]
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ret void
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}
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declare void @Capture(i8*)
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