288 lines
8.8 KiB
C
288 lines
8.8 KiB
C
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// RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -O1 -disable-llvm-passes -o - | FileCheck %s
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// RUN: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -O1 -disable-llvm-passes -o - | FileCheck %s
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// RUN: %clang_cc1 %s -triple aarch64-windows -fms-extensions -emit-llvm -O1 -disable-llvm-passes -o - | FileCheck %s
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// NOTE: we're passing "-O1 -disable-llvm-passes" to avoid adding optnone and noinline everywhere.
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void abort(void) __attribute__((noreturn));
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void might_crash(void);
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void cleanup(void);
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int check_condition(void);
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void basic_finally(void) {
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__try {
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might_crash();
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} __finally {
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cleanup();
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}
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}
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// CHECK-LABEL: define dso_local void @basic_finally()
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// CHECK: invoke void @might_crash()
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// CHECK: to label %[[invoke_cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
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//
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// CHECK: [[invoke_cont]]
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
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// CHECK: call void @"?fin$0@0@basic_finally@@"({{i8( zeroext)?}} 0, i8* %[[fp]])
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// CHECK-NEXT: ret void
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//
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// CHECK: [[lpad]]
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// CHECK-NEXT: %[[pad:[^ ]*]] = cleanuppad
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
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// CHECK: call void @"?fin$0@0@basic_finally@@"({{i8( zeroext)?}} 1, i8* %[[fp]])
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// CHECK-NEXT: cleanupret from %[[pad]] unwind to caller
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// CHECK: define internal void @"?fin$0@0@basic_finally@@"({{.*}})
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// CHECK-SAME: [[finally_attrs:#[0-9]+]]
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// CHECK: call void @cleanup()
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// Mostly check that we don't double emit 'r' which would crash.
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void decl_in_finally(void) {
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__try {
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might_crash();
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} __finally {
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int r;
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}
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}
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// Ditto, don't crash double emitting 'l'.
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void label_in_finally(void) {
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__try {
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might_crash();
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} __finally {
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l:
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cleanup();
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if (check_condition())
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goto l;
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}
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}
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// CHECK-LABEL: define dso_local void @label_in_finally()
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// CHECK: invoke void @might_crash()
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// CHECK: to label %[[invoke_cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
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//
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// CHECK: [[invoke_cont]]
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
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// CHECK: call void @"?fin$0@0@label_in_finally@@"({{i8( zeroext)?}} 0, i8* %[[fp]])
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// CHECK: ret void
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// CHECK: define internal void @"?fin$0@0@label_in_finally@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: br label %[[l:[^ ]*]]
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//
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// CHECK: [[l]]
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// CHECK: call void @cleanup()
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// CHECK: call i32 @check_condition()
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// CHECK: br i1 {{.*}}, label
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// CHECK: br label %[[l]]
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int crashed;
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void use_abnormal_termination(void) {
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__try {
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might_crash();
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} __finally {
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crashed = __abnormal_termination();
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}
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}
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// CHECK-LABEL: define dso_local void @use_abnormal_termination()
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// CHECK: invoke void @might_crash()
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// CHECK: to label %[[invoke_cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
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//
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// CHECK: [[invoke_cont]]
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
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// CHECK: call void @"?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} 0, i8* %[[fp]])
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// CHECK: ret void
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//
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// CHECK: [[lpad]]
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// CHECK-NEXT: %[[pad:[^ ]*]] = cleanuppad
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.localaddress()
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// CHECK: call void @"?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} 1, i8* %[[fp]])
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// CHECK-NEXT: cleanupret from %[[pad]] unwind to caller
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// CHECK: define internal void @"?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} %[[abnormal:abnormal_termination]], i8* %frame_pointer)
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: %[[abnormal_zext:[^ ]*]] = zext i8 %[[abnormal]] to i32
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// CHECK: store i32 %[[abnormal_zext]], i32* @crashed
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// CHECK-NEXT: ret void
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void noreturn_noop_finally() {
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__try {
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__noop();
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} __finally {
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abort();
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}
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}
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// CHECK-LABEL: define dso_local void @noreturn_noop_finally()
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// CHECK: call void @"?fin$0@0@noreturn_noop_finally@@"({{.*}})
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// CHECK: ret void
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// CHECK: define internal void @"?fin$0@0@noreturn_noop_finally@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: call void @abort()
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// CHECK: unreachable
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void noreturn_finally() {
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__try {
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might_crash();
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} __finally {
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abort();
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}
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}
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// CHECK-LABEL: define dso_local void @noreturn_finally()
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// CHECK: invoke void @might_crash()
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// CHECK: to label %[[cont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
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//
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// CHECK: [[cont]]
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// CHECK: call void @"?fin$0@0@noreturn_finally@@"({{.*}})
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// CHECK: ret void
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//
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// CHECK: [[lpad]]
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// CHECK-NEXT: %[[pad:[^ ]*]] = cleanuppad
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// CHECK: call void @"?fin$0@0@noreturn_finally@@"({{.*}})
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// CHECK-NEXT: cleanupret from %[[pad]] unwind to caller
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// CHECK: define internal void @"?fin$0@0@noreturn_finally@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: call void @abort()
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// CHECK: unreachable
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int finally_with_return() {
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__try {
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return 42;
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} __finally {
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}
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}
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// CHECK-LABEL: define dso_local i32 @finally_with_return()
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// CHECK: call void @"?fin$0@0@finally_with_return@@"({{.*}})
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// CHECK-NEXT: ret i32 42
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// CHECK: define internal void @"?fin$0@0@finally_with_return@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK-NOT: br i1
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// CHECK-NOT: br label
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// CHECK: ret void
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int nested___finally___finally() {
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__try {
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__try {
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} __finally {
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return 1;
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}
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} __finally {
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// Intentionally no return here.
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}
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return 0;
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}
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// CHECK-LABEL: define dso_local i32 @nested___finally___finally
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// CHECK: invoke void @"?fin$1@0@nested___finally___finally@@"({{.*}})
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// CHECK: to label %[[outercont:[^ ]*]] unwind label %[[lpad:[^ ]*]]
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//
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// CHECK: [[outercont]]
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// CHECK: call void @"?fin$0@0@nested___finally___finally@@"({{.*}})
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// CHECK-NEXT: ret i32 0
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//
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// CHECK: [[lpad]]
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// CHECK-NEXT: %[[pad:[^ ]*]] = cleanuppad
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// CHECK: call void @"?fin$0@0@nested___finally___finally@@"({{.*}})
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// CHECK-NEXT: cleanupret from %[[pad]] unwind to caller
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// CHECK-LABEL: define internal void @"?fin$0@0@nested___finally___finally@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: ret void
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// CHECK-LABEL: define internal void @"?fin$1@0@nested___finally___finally@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: unreachable
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// FIXME: Our behavior seems suspiciously different.
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int nested___finally___finally_with_eh_edge() {
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__try {
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__try {
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might_crash();
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} __finally {
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return 899;
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}
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} __finally {
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// Intentionally no return here.
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}
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return 912;
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}
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// CHECK-LABEL: define dso_local i32 @nested___finally___finally_with_eh_edge
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// CHECK: invoke void @might_crash()
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// CHECK-NEXT: to label %[[invokecont:[^ ]*]] unwind label %[[lpad1:[^ ]*]]
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//
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// [[invokecont]]
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// CHECK: invoke void @"?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK-NEXT: to label %[[outercont:[^ ]*]] unwind label %[[lpad2:[^ ]*]]
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//
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// CHECK: [[outercont]]
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// CHECK: call void @"?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK-NEXT: ret i32 912
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//
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// CHECK: [[lpad1]]
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// CHECK-NEXT: %[[innerpad:[^ ]*]] = cleanuppad
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// CHECK: invoke void @"?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK-NEXT: label %[[innercleanupretbb:[^ ]*]] unwind label %[[lpad2:[^ ]*]]
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//
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// CHECK: [[innercleanupretbb]]
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// CHECK-NEXT: cleanupret from %[[innerpad]] unwind label %[[lpad2]]
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//
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// CHECK: [[lpad2]]
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// CHECK-NEXT: %[[outerpad:[^ ]*]] = cleanuppad
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// CHECK: call void @"?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK-NEXT: cleanupret from %[[outerpad]] unwind to caller
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// CHECK-LABEL: define internal void @"?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: ret void
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// CHECK-LABEL: define internal void @"?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: unreachable
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void finally_within_finally() {
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__try {
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might_crash();
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} __finally {
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__try {
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might_crash();
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} __finally {
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}
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}
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}
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// CHECK-LABEL: define dso_local void @finally_within_finally(
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// CHECK: invoke void @might_crash(
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// CHECK: call void @"?fin$0@0@finally_within_finally@@"(
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// CHECK: call void @"?fin$0@0@finally_within_finally@@"({{.*}}) [ "funclet"(
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// CHECK-LABEL: define internal void @"?fin$0@0@finally_within_finally@@"({{[^)]*}})
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// CHECK-SAME: [[finally_attrs]]
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// CHECK: invoke void @might_crash(
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// CHECK: call void @"?fin$1@0@finally_within_finally@@"(
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// CHECK: call void @"?fin$1@0@finally_within_finally@@"({{.*}}) [ "funclet"(
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// CHECK-LABEL: define internal void @"?fin$1@0@finally_within_finally@@"({{[^)]*}})
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// CHECK-SAME: [[finally_attrs]]
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void cleanup_with_func(const char *);
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void finally_with_func() {
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__try {
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might_crash();
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} __finally {
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cleanup_with_func(__func__);
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}
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}
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// CHECK-LABEL: define internal void @"?fin$0@0@finally_with_func@@"({{[^)]*}})
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// CHECK: call void @cleanup_with_func(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @"??_C@_0BC@COAGBPGM@finally_with_func?$AA@", i{{32|64}} 0, i{{32|64}} 0))
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// Look for the absence of noinline. nounwind is expected; any further
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// attributes should be string attributes.
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// CHECK: attributes [[finally_attrs]] = { nounwind "{{.*}}" }
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