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// RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
// FIXME: Rewrite CHECKs for unnamed BBs and Insts.
// REQUIRES: asserts
void g();
//////////////////////////////////////////////////////////////////////////////
// __leave with __except
// Nothing in the __try block can trap, so __try.cont isn't created.
int __leave_with___except_simple() {
int myres = 0;
__try {
myres = 15;
__leave;
myres = 23;
} __except (1) {
return 0;
}
return 1;
}
// CHECK-LABEL: define i32 @__leave_with___except_simple()
// CHECK: store i32 15, i32* %myres
// CHECK-NEXT: br label %__try.__leave
// CHECK-NOT: store i32 23
// CHECK: __try.__leave:
// CHECK-NEXT: ret i32 1
// The "normal" case.
int __leave_with___except() {
int myres = 0;
__try {
g();
__leave;
myres = 23;
} __except (1) {
return 0;
}
return 1;
}
// CHECK-LABEL: define i32 @__leave_with___except()
// CHECK: invoke void bitcast (void (...)* @g to void ()*)()
// CHECK-NEXT: to label %[[cont:.*]] unwind label %{{.*}}
// For __excepts, instead of an explicit __try.__leave label, we could use
// use invoke.cont as __leave jump target instead. However, not doing this
// keeps the CodeGen code simpler, __leave is very rare, and SimplifyCFG will
// simplify this anyways.
// CHECK: [[cont]]
// CHECK-NEXT: br label %__try.__leave
// CHECK-NOT: store i32 23
// CHECK: __try.__leave:
// CHECK-NEXT: br label %__try.cont
//////////////////////////////////////////////////////////////////////////////
// __leave with __finally
void abort(void) __attribute__((noreturn));
// Nothing in the __try block can trap, so __finally.cont and friends aren't
// created.
int __leave_with___finally_simple() {
int myres = 0;
__try {
myres = 15;
__leave;
myres = 23;
} __finally {
return 0;
}
return 1;
}
// CHECK-LABEL: define i32 @__leave_with___finally_simple()
// CHECK: store i32 15, i32* %myres
// CHECK-NEXT: br label %__try.__leave
// CHECK-NOT: store i32 23
// CHECK: __try.__leave:
// CHECK-NEXT: store i8 0, i8* %abnormal.termination.slot
// CHECK-NEXT: br label %__finally
// __finally block doesn't return, __finally.cont doesn't exist.
int __leave_with___finally_noreturn() {
int myres = 0;
__try {
myres = 15;
__leave;
myres = 23;
} __finally {
abort();
}
return 1;
}
// CHECK-LABEL: define i32 @__leave_with___finally_noreturn()
// CHECK: store i32 15, i32* %myres
// CHECK-NEXT: br label %__try.__leave
// CHECK-NOT: store i32 23
// CHECK: __try.__leave:
// CHECK-NEXT: store i8 0, i8* %abnormal.termination.slot
// CHECK-NEXT: br label %__finally
// The "normal" case.
int __leave_with___finally() {
int myres = 0;
__try {
g();
__leave;
myres = 23;
} __finally {
return 0;
}
return 1;
}
// CHECK-LABEL: define i32 @__leave_with___finally()
// CHECK: invoke void bitcast (void (...)* @g to void ()*)()
// CHECK-NEXT: to label %[[cont:.*]] unwind label %{{.*}}
// For __finally, there needs to be an explicit __try.__leave, because
// abnormal.termination.slot needs to be set there.
// CHECK: [[cont]]
// CHECK-NEXT: br label %__try.__leave
// CHECK-NOT: store i32 23
// CHECK: __try.__leave:
// CHECK-NEXT: store i8 0, i8* %abnormal.termination.slot
// CHECK-NEXT: br label %__finally
//////////////////////////////////////////////////////////////////////////////
// Mixed, nested cases.
// FIXME: Test with outer __finally once PR22553 is fixed.
int nested___except___finally() {
int myres = 0;
__try {
__try {
g();
} __finally {
g();
__leave; // Refers to the outer __try, not the __finally!
myres = 23;
return 0;
}
myres = 51;
} __except (1) {
}
return 1;
}
// The order of basic blocks in the below doesn't matter.
// CHECK-LABEL: define i32 @nested___except___finally()
// CHECK-LABEL: invoke void bitcast (void (...)* @g to void ()*)()
// CHECK-NEXT: to label %[[g1_cont:.*]] unwind label %[[g1_lpad:.*]]
// CHECK: [[g1_cont]]:
// CHECK-NEXT: store i8 0, i8* %abnormal.termination.slot
// CHECK-NEXT: br label %__finally
// CHECK-LABEL: __finally:
// CHECK-NEXT: invoke void bitcast (void (...)* @g to void ()*)() #3
// CHECK-NEXT: to label %[[g2_cont:.*]] unwind label %[[g2_lpad:.*]]
// CHECK: [[g2_cont]]:
// CHECK-NOT: store i32 23
// CHECK: br label %__try.__leave
// CHECK: [[g1_lpad]]:
// CHECK: store i8 1, i8* %abnormal.termination.slot
// CHECK-NEXT: br label %__finally
// CHECK: [[g2_lpad]]:
// CHECK-NOT: %abnormal.termination.slot
// CHECK: br label %__except
// CHECK-LABEL: __except:
// CHECK-NEXT: br label %__try.cont
// CHECK-LABEL: __try.__leave:
// CHECK-NEXT: br label %__try.cont
int nested___except___except() {
int myres = 0;
__try {
__try {
g();
myres = 16;
} __except (1) {
g();
__leave; // Refers to the outer __try, not the __except we're in!
myres = 23;
return 0;
}
myres = 51;
} __except (1) {
}
return 1;
}
// The order of basic blocks in the below doesn't matter.
// CHECK-LABEL: define i32 @nested___except___except()
// CHECK-LABEL: invoke void bitcast (void (...)* @g to void ()*)()
// CHECK-NEXT: to label %[[g1_cont:.*]] unwind label %[[g1_lpad:.*]]
// CHECK: [[g1_cont]]:
// CHECK: store i32 16, i32* %myres
// CHECK-NEXT: br label %__try.cont
// CHECK: [[g1_lpad]]:
// CHECK: br label %__except
// CHECK-LABEL: __except:
// CHECK-NEXT: invoke void bitcast (void (...)* @g to void ()*)() #3
// CHECK-NEXT: to label %[[g2_cont:.*]] unwind label %[[g2_lpad:.*]]
// CHECK: [[g2_cont]]:
// CHECK-NOT: store i32 23
// CHECK: br label %__try.__leave
// CHECK: [[g2_lpad]]:
// CHECK: br label %__except3
// CHECK-LABEL: __except3:
// CHECK-NEXT: br label %__try.cont4
// CHECK-LABEL: __try.cont:
// CHECK-NEXT: store i32 51, i32* %myres
// CHECK-NEXT: br label %__try.__leave
// CHECK-LABEL: __try.__leave:
// CHECK-NEXT: br label %__try.cont4
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