|  | // RUN: %clang_cc1 -triple i386-unknown-unknown -Wno-strict-prototypes -emit-llvm < %s | FileCheck %s | 
|  |  | 
|  | void __attribute__((fastcall)) f1(void); | 
|  | void __attribute__((stdcall)) f2(void); | 
|  | void __attribute__((thiscall)) f3(void); | 
|  | void __attribute__((fastcall)) f4(void) { | 
|  | // CHECK-LABEL: define{{.*}} x86_fastcallcc void @f4() | 
|  | f1(); | 
|  | // CHECK: call x86_fastcallcc void @f1() | 
|  | } | 
|  | void __attribute__((stdcall)) f5(void) { | 
|  | // CHECK-LABEL: define{{.*}} x86_stdcallcc void @f5() | 
|  | f2(); | 
|  | // CHECK: call x86_stdcallcc void @f2() | 
|  | } | 
|  | void __attribute__((thiscall)) f6(void) { | 
|  | // CHECK-LABEL: define{{.*}} x86_thiscallcc void @f6() | 
|  | f3(); | 
|  | // CHECK: call x86_thiscallcc void @f3() | 
|  | } | 
|  |  | 
|  | // PR5280 | 
|  | void (__attribute__((fastcall)) *pf1)(void) = f1; | 
|  | void (__attribute__((stdcall)) *pf2)(void) = f2; | 
|  | void (__attribute__((thiscall)) *pf3)(void) = f3; | 
|  | void (__attribute__((fastcall)) *pf4)(void) = f4; | 
|  | void (__attribute__((stdcall)) *pf5)(void) = f5; | 
|  | void (__attribute__((thiscall)) *pf6)(void) = f6; | 
|  |  | 
|  | int main(void) { | 
|  | f4(); f5(); f6(); | 
|  | // CHECK: call x86_fastcallcc void @f4() | 
|  | // CHECK: call x86_stdcallcc void @f5() | 
|  | // CHECK: call x86_thiscallcc void @f6() | 
|  | pf1(); pf2(); pf3(); pf4(); pf5(); pf6(); | 
|  | // CHECK: call x86_fastcallcc void %{{.*}}() | 
|  | // CHECK: call x86_stdcallcc void %{{.*}}() | 
|  | // CHECK: call x86_thiscallcc void %{{.*}}() | 
|  | // CHECK: call x86_fastcallcc void %{{.*}}() | 
|  | // CHECK: call x86_stdcallcc void %{{.*}}() | 
|  | // CHECK: call x86_thiscallcc void %{{.*}}() | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | // PR7117 | 
|  | void __attribute((stdcall)) f7(foo) int foo; {} | 
|  | void f8(void) { | 
|  | f7(0); | 
|  | // CHECK: call x86_stdcallcc void @f7(i32 noundef 0) | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo1(int y); | 
|  | void bar1(int y) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar1 | 
|  | // CHECK: call x86_fastcallcc void @foo1(i32 inreg noundef % | 
|  | foo1(y); | 
|  | } | 
|  |  | 
|  | struct S1 { | 
|  | int x; | 
|  | }; | 
|  | void __attribute__((fastcall)) foo2(struct S1 y); | 
|  | void bar2(struct S1 y) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar2 | 
|  | // CHECK: call x86_fastcallcc void @foo2(i32 inreg undef, i32 % | 
|  | foo2(y); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo3(int *y); | 
|  | void bar3(int *y) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar3 | 
|  | // CHECK: call x86_fastcallcc void @foo3(ptr inreg noundef % | 
|  | foo3(y); | 
|  | } | 
|  |  | 
|  | enum Enum {Eval}; | 
|  | void __attribute__((fastcall)) foo4(enum Enum y); | 
|  | void bar4(enum Enum y) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar4 | 
|  | // CHECK: call x86_fastcallcc void @foo4(i32 inreg noundef % | 
|  | foo4(y); | 
|  | } | 
|  |  | 
|  | struct S2 { | 
|  | int x1; | 
|  | double x2; | 
|  | double x3; | 
|  | }; | 
|  | void __attribute__((fastcall)) foo5(struct S2 y); | 
|  | void bar5(struct S2 y) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar5 | 
|  | // CHECK: call x86_fastcallcc void @foo5(ptr noundef byval(%struct.S2) align 4 % | 
|  | foo5(y); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo6(long long y); | 
|  | void bar6(long long y) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar6 | 
|  | // CHECK: call x86_fastcallcc void @foo6(i64 noundef % | 
|  | foo6(y); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo7(int a, struct S1 b, int c); | 
|  | void bar7(int a, struct S1 b, int c) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar7 | 
|  | // CHECK: call x86_fastcallcc void @foo7(i32 inreg noundef %{{.*}}, i32 %{{.*}}, i32 noundef %{{.*}} | 
|  | foo7(a, b, c); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo8(struct S1 a, int b); | 
|  | void bar8(struct S1 a, int b) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar8 | 
|  | // CHECK: call x86_fastcallcc void @foo8(i32 inreg undef, i32 %{{.*}}, i32 inreg noundef % | 
|  | foo8(a, b); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo9(struct S2 a, int b); | 
|  | void bar9(struct S2 a, int b) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar9 | 
|  | // CHECK: call x86_fastcallcc void @foo9(ptr noundef byval(%struct.S2) align 4 %{{.*}}, i32 noundef % | 
|  | foo9(a, b); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo10(float y, int x); | 
|  | void bar10(float y, int x) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar10 | 
|  | // CHECK: call x86_fastcallcc void @foo10(float noundef %{{.*}}, i32 inreg noundef % | 
|  | foo10(y, x); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo11(double y, int x); | 
|  | void bar11(double y, int x) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar11 | 
|  | // CHECK: call x86_fastcallcc void @foo11(double noundef %{{.*}}, i32 inreg noundef % | 
|  | foo11(y, x); | 
|  | } | 
|  |  | 
|  | struct S3 { | 
|  | float x; | 
|  | }; | 
|  | void __attribute__((fastcall)) foo12(struct S3 y, int x); | 
|  | void bar12(struct S3 y, int x) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar12 | 
|  | // CHECK: call x86_fastcallcc void @foo12(float %{{.*}}, i32 inreg noundef % | 
|  | foo12(y, x); | 
|  | } | 
|  |  | 
|  | void __attribute__((fastcall)) foo13(long long a, int b, int c); | 
|  | void bar13(long long a, int b, int c) { | 
|  | // CHECK-LABEL: define{{.*}} void @bar13 | 
|  | // CHECK: call x86_fastcallcc void @foo13(i64 noundef %{{.*}}, i32 inreg noundef %{{.*}}, i32 inreg noundef % | 
|  | foo13(a, b, c); | 
|  | } | 
|  |  | 
|  | struct S2 __attribute__((fastcall)) foo14(int a) { | 
|  | // CHECK-LABEL: define dso_local x86_fastcallcc void @foo14(ptr dead_on_unwind noalias writable sret(%struct.S2) align 4 %agg.result, i32 inreg noundef %a) | 
|  | struct S2 r = {a}; | 
|  | return r; | 
|  | } |