1 // RUN: %clang_cc1 -triple riscv32 -emit-llvm %s -o - | FileCheck %s
2
3 // This file contains test cases that will have different output for ilp32 vs
4 // the other 32-bit ABIs.
5
6 #include <stddef.h>
7 #include <stdint.h>
8
9 struct tiny {
10 uint8_t a, b, c, d;
11 };
12
13 struct small {
14 int32_t a, *b;
15 };
16
17 struct small_aligned {
18 int64_t a;
19 };
20
21 struct large {
22 int32_t a, b, c, d;
23 };
24
25 // Scalars passed on the stack should not have signext/zeroext attributes
26 // (they are anyext).
27
28 // CHECK-LABEL: define{{.*}} i32 @f_scalar_stack_1(i32 %a, i64 %b, float %c, double %d, fp128 %e, i8 zeroext %f, i8 %g, i8 %h)
f_scalar_stack_1(int32_t a,int64_t b,float c,double d,long double e,uint8_t f,int8_t g,uint8_t h)29 int f_scalar_stack_1(int32_t a, int64_t b, float c, double d, long double e,
30 uint8_t f, int8_t g, uint8_t h) {
31 return g + h;
32 }
33
34 // Ensure that scalars passed on the stack are still determined correctly in
35 // the presence of large return values that consume a register due to the need
36 // to pass a pointer.
37
38 // CHECK-LABEL: define{{.*}} void @f_scalar_stack_2(%struct.large* noalias sret(%struct.large) align 4 %agg.result, float %a, i64 %b, double %c, fp128 %d, i8 zeroext %e, i8 %f, i8 %g)
f_scalar_stack_2(float a,int64_t b,double c,long double d,uint8_t e,int8_t f,uint8_t g)39 struct large f_scalar_stack_2(float a, int64_t b, double c, long double d,
40 uint8_t e, int8_t f, uint8_t g) {
41 return (struct large){a, e, f, g};
42 }
43
44 // Aggregates and >=XLen scalars passed on the stack should be lowered just as
45 // they would be if passed via registers.
46
47 // CHECK-LABEL: define{{.*}} void @f_scalar_stack_3(double %a, i64 %b, double %c, i64 %d, i32 %e, i64 %f, float %g, double %h, fp128 %i)
f_scalar_stack_3(double a,int64_t b,double c,int64_t d,int e,int64_t f,float g,double h,long double i)48 void f_scalar_stack_3(double a, int64_t b, double c, int64_t d, int e,
49 int64_t f, float g, double h, long double i) {}
50
51 // CHECK-LABEL: define{{.*}} void @f_agg_stack(double %a, i64 %b, double %c, i64 %d, i32 %e.coerce, [2 x i32] %f.coerce, i64 %g.coerce, %struct.large* %h)
f_agg_stack(double a,int64_t b,double c,int64_t d,struct tiny e,struct small f,struct small_aligned g,struct large h)52 void f_agg_stack(double a, int64_t b, double c, int64_t d, struct tiny e,
53 struct small f, struct small_aligned g, struct large h) {}
54