forked from OSchip/llvm-project
234 lines
6.6 KiB
C
234 lines
6.6 KiB
C
// RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
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// FIXME: Re-enable 32-bit SEH.
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// RUNX: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
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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 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.frameaddress(i32 0)
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// CHECK: call void @"\01?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: landingpad
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// CHECK-NEXT: cleanup
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
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// CHECK: call void @"\01?fin$0@0@basic_finally@@"({{i8( zeroext)?}} 1, i8* %[[fp]])
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// CHECK: resume { i8*, i32 }
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// CHECK: define internal void @"\01?fin$0@0@basic_finally@@"({{.*}})
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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 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.frameaddress(i32 0)
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// CHECK: call void @"\01?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 @"\01?fin$0@0@label_in_finally@@"({{.*}})
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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 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.frameaddress(i32 0)
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// CHECK: call void @"\01?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: landingpad
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// CHECK-NEXT: cleanup
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// CHECK: %[[fp:[^ ]*]] = call i8* @llvm.frameaddress(i32 0)
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// CHECK: call void @"\01?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} 1, i8* %[[fp]])
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// CHECK: resume { i8*, i32 }
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// CHECK: define internal void @"\01?fin$0@0@use_abnormal_termination@@"({{i8( zeroext)?}} %[[abnormal:abnormal_termination]], i8* %frame_pointer)
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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 void @noreturn_noop_finally()
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// CHECK: call void @"\01?fin$0@0@noreturn_noop_finally@@"({{.*}})
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// CHECK: ret void
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// CHECK: define internal void @"\01?fin$0@0@noreturn_noop_finally@@"({{.*}})
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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 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 @"\01?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: landingpad
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// CHECK-NEXT: cleanup
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// CHECK: call void @"\01?fin$0@0@noreturn_finally@@"({{.*}})
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// CHECK: resume { i8*, i32 }
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// CHECK: define internal void @"\01?fin$0@0@noreturn_finally@@"({{.*}})
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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 i32 @finally_with_return()
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// CHECK: call void @"\01?fin$0@0@finally_with_return@@"({{.*}})
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// CHECK-NEXT: ret i32 42
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// CHECK: define internal void @"\01?fin$0@0@finally_with_return@@"({{.*}})
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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 i32 @nested___finally___finally
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// CHECK: invoke void @"\01?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 @"\01?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: landingpad
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// CHECK-NEXT: cleanup
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// CHECK: call void @"\01?fin$0@0@nested___finally___finally@@"({{.*}})
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// CHECK-LABEL: define internal void @"\01?fin$0@0@nested___finally___finally@@"({{.*}})
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// CHECK: ret void
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// CHECK-LABEL: define internal void @"\01?fin$1@0@nested___finally___finally@@"({{.*}})
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// CHECK: unreachable
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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 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 @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK: to label %[[outercont:[^ ]*]] unwind label %[[lpad2:[^ ]*]]
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//
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// CHECK: [[outercont]]
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// CHECK: call void @"\01?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: landingpad
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// CHECK-NEXT: cleanup
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// CHECK: invoke void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK: to label %[[outercont:[^ ]*]] unwind label %[[lpad2]]
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//
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// CHECK: [[lpad2]]
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// CHECK-NEXT: landingpad
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// CHECK-NEXT: cleanup
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// CHECK: call void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK: resume
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// CHECK-LABEL: define internal void @"\01?fin$0@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK: ret void
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// CHECK-LABEL: define internal void @"\01?fin$1@0@nested___finally___finally_with_eh_edge@@"({{.*}})
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// CHECK: unreachable
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