e0ac46e69d
This reverts commit d618f1c3b12effd0c2bdb7d02108d3551f389d3d. This commit wasn't reviewed ahead of time and significant concerns were raised immediately after it landed. According to our developer policy this warrants immediate revert of the commit. https://llvm.org/docs/DeveloperPolicy.html#patch-reversion-policy Differential Revision: https://reviews.llvm.org/D155509
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -disable-llvm-passes -Os -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -disable-llvm-passes -Os -std=c99 -o - %s | FileCheck %s
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -disable-llvm-passes -Os -std=c99 -o - %s | FileCheck %s
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// CHECK: define{{.*}} signext i8 @f0(i32 noundef %x) [[NUW:#[0-9]+]]
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// CHECK: define{{.*}} zeroext i8 @f1(i32 noundef %x) [[NUW]]
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// CHECK: define{{.*}} void @f2(i8 noundef signext %x) [[NUW]]
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// CHECK: define{{.*}} void @f3(i8 noundef zeroext %x) [[NUW]]
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// CHECK: define{{.*}} signext i16 @f4(i32 noundef %x) [[NUW]]
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// CHECK: define{{.*}} zeroext i16 @f5(i32 noundef %x) [[NUW]]
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// CHECK: define{{.*}} void @f6(i16 noundef signext %x) [[NUW]]
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// CHECK: define{{.*}} void @f7(i16 noundef zeroext %x) [[NUW]]
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signed char f0(int x) { return x; }
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unsigned char f1(int x) { return x; }
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void f2(signed char x) { }
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void f3(unsigned char x) { }
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signed short f4(int x) { return x; }
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unsigned short f5(int x) { return x; }
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void f6(signed short x) { }
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void f7(unsigned short x) { }
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// CHECK-LABEL: define{{.*}} void @f8()
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// CHECK: [[AI:#[0-9]+]]
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// CHECK: {
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void __attribute__((always_inline)) f8(void) { }
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// CHECK: call void @f9_t()
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// CHECK: [[NR:#[0-9]+]]
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// CHECK: }
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void __attribute__((noreturn)) f9_t(void);
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void f9(void) { f9_t(); }
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// CHECK: call void @f9a()
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// CHECK: [[NR]]
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// CHECK: }
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_Noreturn void f9a(void);
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void f9b(void) { f9a(); }
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// FIXME: We should be setting nounwind on calls.
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// CHECK: call i32 @f10_t()
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// CHECK: [[NUW_RN:#[0-9]+]]
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// CHECK: {
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int __attribute__((const)) f10_t(void);
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int f10(void) { return f10_t(); }
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int f11(void) {
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exit:
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return f10_t();
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}
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int f12(int arg) {
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return arg ? 0 : f10_t();
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}
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// CHECK: define{{.*}} void @f13() [[NUW_OS_RN:#[0-9]+]]
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void f13(void) __attribute__((pure)) __attribute__((const));
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void f13(void){}
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// <rdar://problem/7102668> [irgen] clang isn't setting the optsize bit on functions
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// CHECK-LABEL: define{{.*}} void @f15
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// CHECK: [[NUW]]
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// CHECK: {
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void f15(void) {
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}
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// PR5254
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// CHECK-LABEL: define{{.*}} void @f16
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// CHECK: [[SR:#[0-9]+]]
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// CHECK: {
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void __attribute__((force_align_arg_pointer)) f16(void) {
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}
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// PR11038
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// CHECK-LABEL: define{{.*}} void @f18()
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// CHECK: [[RT:#[0-9]+]]
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// CHECK: {
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// CHECK: call void @f17()
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// CHECK: [[RT_CALL:#[0-9]+]]
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// CHECK: ret void
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__attribute__ ((returns_twice)) void f17(void);
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__attribute__ ((returns_twice)) void f18(void) {
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f17();
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}
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// CHECK-LABEL: define{{.*}} void @f19()
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// CHECK: {
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// CHECK: call i32 @setjmp(ptr noundef null)
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// CHECK: [[RT_CALL]]
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// CHECK: ret void
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typedef int jmp_buf[((9 * 2) + 3 + 16)];
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int setjmp(jmp_buf);
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void f19(void) {
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setjmp(0);
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}
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// CHECK-LABEL: define{{.*}} void @f20()
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// CHECK: {
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// CHECK: call i32 @_setjmp(ptr noundef null)
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// CHECK: [[RT_CALL]]
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// CHECK: ret void
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int _setjmp(jmp_buf);
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void f20(void) {
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_setjmp(0);
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}
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// CHECK: attributes [[NUW]] = { nounwind optsize{{.*}} }
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// CHECK: attributes [[AI]] = { alwaysinline nounwind optsize{{.*}} }
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// CHECK: attributes [[NUW_OS_RN]] = { nounwind optsize willreturn memory(none){{.*}} }
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// CHECK: attributes [[SR]] = { nounwind optsize{{.*}} "stackrealign"{{.*}} }
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// CHECK: attributes [[RT]] = { nounwind optsize returns_twice{{.*}} }
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// CHECK: attributes [[NR]] = { noreturn optsize }
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// CHECK: attributes [[NUW_RN]] = { nounwind optsize willreturn memory(none) }
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// CHECK: attributes [[RT_CALL]] = { optsize returns_twice }
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