teak-llvm/clang/test/CodeGen/mips64-padding-arg.c
Daniel Sanders aa1b35590f [mips] Mark aggregate arguments passed in registers with the inreg attribute
Summary:
This allows us to easily identify them in the backend which in turn allows us
to handle them correctly for big-endian targets (where they must be shifted
into the upper bits of the register).

Depends on D5961

Reviewers: atanasyan

Reviewed By: atanasyan

Subscribers: cfe-commits, theraven

Differential Revision: http://reviews.llvm.org/D5962

llvm-svn: 220566
2014-10-24 15:30:16 +00:00

72 lines
2.8 KiB
C

// RUN: %clang -target mipsel-unknown-linux -O3 -S -o - -emit-llvm %s | FileCheck %s -check-prefix=O32
// RUN: %clang -target mips64el-unknown-linux -O3 -S -mabi=n64 -o - -emit-llvm %s | FileCheck %s -check-prefix=N64
// RUN: %clang -target mipsel-unknown-linux -mfp64 -O3 -S -o - -emit-llvm %s | FileCheck %s -check-prefix=O32
typedef struct {
double d;
long double ld;
} S0;
// Insert padding to ensure arguments of type S0 are aligned to 16-byte boundaries.
// N64-LABEL: define void @foo1(i32 signext %a0, i64, double inreg %a1.coerce0, i64 inreg %a1.coerce1, i64 inreg %a1.coerce2, i64 inreg %a1.coerce3, double inreg %a2.coerce0, i64 inreg %a2.coerce1, i64 inreg %a2.coerce2, i64 inreg %a2.coerce3, i32 signext %b, i64, double inreg %a3.coerce0, i64 inreg %a3.coerce1, i64 inreg %a3.coerce2, i64 inreg %a3.coerce3)
// N64: tail call void @foo2(i32 signext 1, i32 signext 2, i32 signext %a0, i64 undef, double inreg %a1.coerce0, i64 inreg %a1.coerce1, i64 inreg %a1.coerce2, i64 inreg %a1.coerce3, double inreg %a2.coerce0, i64 inreg %a2.coerce1, i64 inreg %a2.coerce2, i64 inreg %a2.coerce3, i32 signext 3, i64 undef, double inreg %a3.coerce0, i64 inreg %a3.coerce1, i64 inreg %a3.coerce2, i64 inreg %a3.coerce3)
// N64: declare void @foo2(i32 signext, i32 signext, i32 signext, i64, double inreg, i64 inreg, i64 inreg, i64 inreg, double inreg, i64 inreg, i64 inreg, i64 inreg, i32 signext, i64, double inreg, i64 inreg, i64 inreg, i64 inreg)
extern void foo2(int, int, int, S0, S0, int, S0);
void foo1(int a0, S0 a1, S0 a2, int b, S0 a3) {
foo2(1, 2, a0, a1, a2, 3, a3);
}
// Insert padding before long double argument.
//
// N64-LABEL: define void @foo3(i32 signext %a0, i64, fp128 %a1)
// N64: tail call void @foo4(i32 signext 1, i32 signext 2, i32 signext %a0, i64 undef, fp128 %a1)
// N64: declare void @foo4(i32 signext, i32 signext, i32 signext, i64, fp128)
extern void foo4(int, int, int, long double);
void foo3(int a0, long double a1) {
foo4(1, 2, a0, a1);
}
// Insert padding after hidden argument.
//
// N64-LABEL: define void @foo5(%struct.S0* noalias sret %agg.result, i64, fp128 %a0)
// N64: call void @foo6(%struct.S0* sret %agg.result, i32 signext 1, i32 signext 2, i64 undef, fp128 %a0)
// N64: declare void @foo6(%struct.S0* sret, i32 signext, i32 signext, i64, fp128)
extern S0 foo6(int, int, long double);
S0 foo5(long double a0) {
return foo6(1, 2, a0);
}
// Do not insert padding if ABI is O32.
//
// O32-LABEL: define void @foo7(float %a0, double %a1)
// O32: declare void @foo8(float, double)
extern void foo8(float, double);
void foo7(float a0, double a1) {
foo8(a0 + 1.0f, a1 + 2.0);
}
// O32-LABEL: define void @foo9()
// O32: declare void @foo10(i32 signext, i32
typedef struct __attribute__((aligned(16))) {
int a;
} S16;
S16 s16;
void foo10(int, S16);
void foo9(void) {
foo10(1, s16);
}