56 lines
2.1 KiB
LLVM
56 lines
2.1 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(ptr %x) sanitize_hwaddress
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declare void @onExcept(ptr %x) sanitize_hwaddress
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declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind
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declare void @llvm.lifetime.end.p0(i64, ptr nocapture) nounwind
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declare i32 @__gxx_personality_v0(...)
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define void @test() sanitize_hwaddress personality ptr @__gxx_personality_v0 {
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entry:
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%x = alloca i32, align 8
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%exn.slot = alloca ptr, align 8
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%ehselector.slot = alloca i32, align 4
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call void @llvm.lifetime.start.p0(i64 8, ptr %x)
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invoke void @mayFail(ptr %x) to label %invoke.cont unwind label %lpad
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invoke.cont: ; preds = %entry
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; CHECK: invoke.cont:
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; CHECK: call void @llvm.memset.p0.i64(ptr align 1 %{{.*}}, i8 0, i64 1, i1 false)
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; CHECK: call void @llvm.lifetime.end.p0(i64 16, ptr {{.*}}{{.*}}%x)
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; CHECK: ret void
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call void @llvm.lifetime.end.p0(i64 8, ptr %x)
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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.p0.i64(ptr align 1 %{{.*}}, i8 0, i64 1, i1 false)
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; CHECK: call void @llvm.lifetime.end.p0(i64 16, ptr {{.*}}{{.*}}%x)
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; CHECK: br label %eh.resume
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%0 = landingpad { ptr, i32 }
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cleanup
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%1 = extractvalue { ptr, i32 } %0, 0
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store ptr %1, ptr %exn.slot, align 8
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%2 = extractvalue { ptr, i32 } %0, 1
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store i32 %2, ptr %ehselector.slot, align 4
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call void @onExcept(ptr %x) #18
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call void @llvm.lifetime.end.p0(i64 8, ptr %x)
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br label %eh.resume
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eh.resume: ; preds = %lpad
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%exn = load ptr, ptr %exn.slot, align 8
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%sel = load i32, ptr %ehselector.slot, align 4
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%lpad.val = insertvalue { ptr, i32 } undef, ptr %exn, 0
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%lpad.val1 = insertvalue { ptr, i32 } %lpad.val, i32 %sel, 1
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resume { ptr, i32 } %lpad.val1
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}
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