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TheRock/compiler/amd-llvm/clang/test/CodeGenCXX/conditional-temporaries.cpp
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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// REQUIRES: amdgpu-registered-target
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 -O2 -disable-llvm-passes | FileCheck %s --check-prefixes=CHECK,CHECK-NOOPT
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=x86_64-apple-darwin9 -O2 | FileCheck %s --check-prefixes=CHECK,CHECK-OPT
// RUN: %clang_cc1 -emit-llvm %s -o - -triple=amdgcn-amd-amdhsa -O2 | FileCheck %s --check-prefixes=CHECK,CHECK-OPT
namespace {
static int ctorcalls;
static int dtorcalls;
struct A {
A() : i(0) { ctorcalls++; }
~A() { dtorcalls++; }
int i;
friend const A& operator<<(const A& a, int n) {
return a;
}
};
void g(int) { }
void g(const A&) { }
void f1(bool b) {
g(b ? A().i : 0);
g(b || A().i);
g(b && A().i);
g(b ? A() << 1 : A() << 2);
}
struct Checker {
Checker() {
f1(true);
f1(false);
}
};
Checker c;
}
// CHECK-OPT-LABEL: define{{.*}} i32 @_Z12getCtorCallsv()
int getCtorCalls() {
// CHECK-OPT: ret i32 5
return ctorcalls;
}
// CHECK-OPT-LABEL: define{{.*}} i32 @_Z12getDtorCallsv()
int getDtorCalls() {
// CHECK-OPT: ret i32 5
return dtorcalls;
}
// CHECK-OPT-LABEL: define{{.*}} zeroext i1 @_Z7successv()
bool success() {
// CHECK-OPT: ret i1 true
return ctorcalls == dtorcalls;
}
struct X { ~X(); int f(); };
int g(int, int, int);
// CHECK-LABEL: @_Z16lifetime_nontriv
int lifetime_nontriv(bool cond) {
// CHECK-NOOPT: store i1 false,
// CHECK-NOOPT: store i1 false,
// CHECK-NOOPT: store i1 false,
// CHECK-NOOPT: store i1 false,
// CHECK-NOOPT: store i1 false,
// CHECK-NOOPT: store i1 false,
// CHECK-NOOPT: br i1
//
// CHECK-NOOPT: call void @llvm.lifetime.start
// CHECK-NOOPT: store i1 true,
// CHECK-NOOPT: store i1 true,
// CHECK-NOOPT: call noundef i32 @_ZN1X1fEv(
// CHECK-NOOPT: call void @llvm.lifetime.start
// CHECK-NOOPT: store i1 true,
// CHECK-NOOPT: store i1 true,
// CHECK-NOOPT: call noundef i32 @_ZN1X1fEv(
// CHECK-NOOPT: call void @llvm.lifetime.start
// CHECK-NOOPT: store i1 true,
// CHECK-NOOPT: store i1 true,
// CHECK-NOOPT: call noundef i32 @_ZN1X1fEv(
// CHECK-NOOPT: call noundef i32 @_Z1giii(
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: call noundef i32 @_Z1giii(i32 noundef 1, i32 noundef 2, i32 noundef 3)
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: load i1,
// CHECK-NOOPT: br i1
// CHECK-NOOPT: call void @_ZN1XD1Ev(
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: load i1,
// CHECK-NOOPT: br i1
// CHECK-NOOPT: call void @llvm.lifetime.end
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: load i1,
// CHECK-NOOPT: br i1
// CHECK-NOOPT: call void @_ZN1XD1Ev(
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: load i1,
// CHECK-NOOPT: br i1
// CHECK-NOOPT: call void @llvm.lifetime.end
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: load i1,
// CHECK-NOOPT: br i1
// CHECK-NOOPT: call void @_ZN1XD1Ev(
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: load i1,
// CHECK-NOOPT: br i1
// CHECK-NOOPT: call void @llvm.lifetime.end
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: ret
// CHECK-OPT: br i1
//
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call noundef i32 @_ZN1X1fEv(
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call noundef i32 @_ZN1X1fEv(
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call noundef i32 @_ZN1X1fEv(
// CHECK-OPT: call noundef i32 @_Z1giii(
// CHECK-OPT: call void @_ZN1XD1Ev(
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: call void @_ZN1XD1Ev(
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: call void @_ZN1XD1Ev(
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: br label
return cond ? g(X().f(), X().f(), X().f()) : g(1, 2, 3);
}
struct Y { int f(); };
int g(int, int, int);
// CHECK-LABEL: @_Z13lifetime_triv
int lifetime_triv(bool cond) {
// CHECK-NOOPT: call void @llvm.lifetime.start
// CHECK-NOOPT: call void @llvm.lifetime.start
// CHECK-NOOPT: call void @llvm.lifetime.start
// CHECK-NOOPT: br i1
//
// CHECK-NOOPT: call noundef i32 @_ZN1Y1fEv(
// CHECK-NOOPT: call noundef i32 @_ZN1Y1fEv(
// CHECK-NOOPT: call noundef i32 @_ZN1Y1fEv(
// CHECK-NOOPT: call noundef i32 @_Z1giii(
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: call noundef i32 @_Z1giii(i32 noundef 1, i32 noundef 2, i32 noundef 3)
// CHECK-NOOPT: br label
//
// CHECK-NOOPT: call void @llvm.lifetime.end
// CHECK-NOOPT-NOT: br
// CHECK-NOOPT: call void @llvm.lifetime.end
// CHECK-NOOPT-NOT: br
// CHECK-NOOPT: call void @llvm.lifetime.end
//
// CHECK-NOOPT: ret
// FIXME: LLVM isn't smart enough to remove the lifetime markers from the
// g(1, 2, 3) path here.
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: br i1
//
// CHECK-OPT: call noundef i32 @_ZN1Y1fEv(
// CHECK-OPT: call noundef i32 @_ZN1Y1fEv(
// CHECK-OPT: call noundef i32 @_ZN1Y1fEv(
// CHECK-OPT: call noundef i32 @_Z1giii(
// CHECK-OPT: br label
//
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: call void @llvm.lifetime.end
return cond ? g(Y().f(), Y().f(), Y().f()) : g(1, 2, 3);
}
struct Z { ~Z() {} int f(); };
int g(int, int, int);
// CHECK-LABEL: @_Z22lifetime_nontriv_empty
int lifetime_nontriv_empty(bool cond) {
// CHECK-OPT: br i1
//
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call noundef i32 @_ZN1Z1fEv(
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call noundef i32 @_ZN1Z1fEv(
// CHECK-OPT: call void @llvm.lifetime.start
// CHECK-OPT: call noundef i32 @_ZN1Z1fEv(
// CHECK-OPT: call noundef i32 @_Z1giii(
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: call void @llvm.lifetime.end
// CHECK-OPT: br label
return cond ? g(Z().f(), Z().f(), Z().f()) : g(1, 2, 3);
}
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