forked from OSchip/llvm-project
61 lines
2.3 KiB
LLVM
61 lines
2.3 KiB
LLVM
; Test allocas with multiple lifetime ends, as frequently seen for exception
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; handling.
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;
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; RUN: opt -passes=hwasan -hwasan-use-after-scope -S -o - %s | FileCheck %s --check-prefix=CHECK
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64--linux-android"
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declare void @mayFail(i32* %x) sanitize_hwaddress
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declare void @onExcept(i32* %x) sanitize_hwaddress
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind
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declare i32 @__gxx_personality_v0(...)
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define void @test() sanitize_hwaddress personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
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entry:
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%x = alloca i32, align 8
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%exn.slot = alloca i8*, align 8
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%ehselector.slot = alloca i32, align 4
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%0 = bitcast i32* %x to i8*
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call void @llvm.lifetime.start.p0i8(i64 8, i8* %0)
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invoke void @mayFail(i32* %x) to label %invoke.cont unwind label %lpad
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; CHECK: [[CAST:%.*]] = bitcast { i32, [12 x i8] }* %x to i32*
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; CHECK: [[TMP1:%.*]] = bitcast i32* {{.*}}[[CAST]] to i8*
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invoke.cont: ; preds = %entry
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; CHECK: invoke.cont:
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; CHECK: call void @llvm.memset.p0i8.i64(i8* align 1 %{{.*}}, i8 0, i64 1, i1 false)
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; CHECK: call void @llvm.lifetime.end.p0i8(i64 16, i8* {{.*}}[[TMP1]])
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; CHECK: ret void
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%1 = bitcast i32* %x to i8*
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call void @llvm.lifetime.end.p0i8(i64 8, i8* %1)
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ret void
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lpad: ; preds = %entry
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; CHECK: lpad
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; CHECK: call void @llvm.memset.p0i8.i64(i8* align 1 %{{.*}}, i8 0, i64 1, i1 false)
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; CHECK: call void @llvm.lifetime.end.p0i8(i64 16, i8* {{.*}}[[TMP1]])
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; CHECK: br label %eh.resume
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%2 = landingpad { i8*, i32 }
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cleanup
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%3 = extractvalue { i8*, i32 } %2, 0
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store i8* %3, i8** %exn.slot, align 8
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%4 = extractvalue { i8*, i32 } %2, 1
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store i32 %4, i32* %ehselector.slot, align 4
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call void @onExcept(i32* %x) #18
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%5 = bitcast i32* %x to i8*
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call void @llvm.lifetime.end.p0i8(i64 8, i8* %5)
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br label %eh.resume
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eh.resume: ; preds = %lpad
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%exn = load i8*, i8** %exn.slot, align 8
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%sel = load i32, i32* %ehselector.slot, align 4
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn, 0
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%lpad.val1 = insertvalue { i8*, i32 } %lpad.val, i32 %sel, 1
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resume { i8*, i32 } %lpad.val1
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}
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