127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
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// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm -Os -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]]
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void f13(void) __attribute__((pure)) __attribute__((const));
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void f13(void){}
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// Ensure that these get inlined: rdar://6853279
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// CHECK-LABEL: define void @f14
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// CHECK-NOT: @ai_
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// CHECK: call void @f14_end
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static __inline__ __attribute__((always_inline))
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int ai_1() { return 4; }
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static __inline__ __attribute__((always_inline))
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struct {
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int a, b, c, d, e;
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} ai_2() { while (1) {} }
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void f14(int a) {
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extern void f14_end(void);
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if (a)
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ai_2();
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ai_1();
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f14_end();
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}
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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: attributes [[NUW]] = { nounwind optsize readnone{{.*}} }
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// CHECK: attributes [[AI]] = { alwaysinline nounwind optsize readnone{{.*}} }
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// CHECK: attributes [[ALIGN]] = { nounwind optsize readnone alignstack=16{{.*}} }
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// CHECK: attributes [[RT]] = { nounwind optsize returns_twice{{.*}} }
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// CHECK: attributes [[NR]] = { noreturn nounwind optsize }
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// CHECK: attributes [[NUW_RN]] = { nounwind optsize readnone }
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// CHECK: attributes [[RT_CALL]] = { nounwind optsize returns_twice }
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