45bbe0117b
attributes. These patches don't work because we can't currently access the parameter information in a reliable way when building attributes. I thought this would be relatively straightforward to fix, but it seems not to be the case. Fixing this will requrie a substantial re-plumbing of machinery to allow attributes to be handled in this location, and several other fixes to the attribute machinery should probably be made at the same time. All of this will make the patch .... substantially more complicated. Reverting for now as there are active miscompiles caused by the current version. llvm-svn: 298695
119 lines
3.1 KiB
C
119 lines
3.1 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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// CHECK: define signext i8 @f0(i32 %x) [[NUW:#[0-9]+]]
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// CHECK: define zeroext i8 @f1(i32 %x) [[NUW]]
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// CHECK: define void @f2(i8 signext %x) [[NUW]]
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// CHECK: define void @f3(i8 zeroext %x) [[NUW]]
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// CHECK: define signext i16 @f4(i32 %x) [[NUW]]
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// CHECK: define zeroext i16 @f5(i32 %x) [[NUW]]
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// CHECK: define void @f6(i16 signext %x) [[NUW]]
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// CHECK: define void @f7(i16 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: [[ALIGN:#[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(i32* 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(i32* 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 readnone{{.*}} }
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// CHECK: attributes [[ALIGN]] = { nounwind optsize alignstack=16{{.*}} }
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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 readnone }
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// CHECK: attributes [[RT_CALL]] = { optsize returns_twice }
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