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// RUN: %clang -target mips-unknown-linux -O3 -S -o - -emit-llvm %s | FileCheck %s -check-prefix=ALL -check-prefix=O32
// RUN: %clang -target mips64-unknown-linux -O3 -S -o - -emit-llvm -mabi=n32 %s | FileCheck %s -check-prefix=ALL -check-prefix=N32
// RUN: %clang -target mips64-unknown-linux -O3 -S -o - -emit-llvm %s | FileCheck %s -check-prefix=ALL -check-prefix=N64
#include <stdarg.h>
typedef int v4i32 __attribute__ ((__vector_size__ (16)));
int test_v4i32(char *fmt, ...) {
va_list va;
va_start(va, fmt);
v4i32 v = va_arg(va, v4i32);
va_end(va);
return v[0];
}
// ALL: define i32 @test_v4i32(i8*{{.*}} %fmt, ...)
//
// O32: %va = alloca i8*, align [[PTRALIGN:4]]
// N32: %va = alloca i8*, align [[PTRALIGN:4]]
// N64: %va = alloca i8*, align [[PTRALIGN:8]]
//
// ALL: [[VA1:%.+]] = bitcast i8** %va to i8*
// ALL: call void @llvm.va_start(i8* [[VA1]])
// ALL: [[AP_CUR:%.+]] = load i8** %va, align [[PTRALIGN]]
//
// O32: [[PTR0:%.+]] = ptrtoint i8* [[AP_CUR]] to [[PTRTYPE:i32]]
// N32: [[PTR0:%.+]] = ptrtoint i8* [[AP_CUR]] to [[PTRTYPE:i32]]
// N64: [[PTR0:%.+]] = ptrtoint i8* [[AP_CUR]] to [[PTRTYPE:i64]]
//
// Vectors are 16-byte aligned, however the O32 ABI has a maximum alignment of
// 8-bytes since the base of the stack is 8-byte aligned.
// O32: [[PTR1:%.+]] = add i32 [[PTR0]], 7
// O32: [[PTR2:%.+]] = and i32 [[PTR1]], -8
//
// N32: [[PTR1:%.+]] = add i32 [[PTR0]], 15
// N32: [[PTR2:%.+]] = and i32 [[PTR1]], -16
//
// N64: [[PTR1:%.+]] = add i64 [[PTR0]], 15
// N64: [[PTR2:%.+]] = and i64 [[PTR1]], -16
//
// ALL: [[PTR3:%.+]] = inttoptr [[PTRTYPE]] [[PTR2]] to <4 x i32>*
// ALL: [[PTR4:%.+]] = inttoptr [[PTRTYPE]] [[PTR2]] to i8*
// ALL: [[AP_NEXT:%.+]] = getelementptr i8* [[PTR4]], [[PTRTYPE]] 16
// ALL: store i8* [[AP_NEXT]], i8** %va, align [[PTRALIGN]]
// ALL: [[PTR5:%.+]] = load <4 x i32>* [[PTR3]], align 16
// ALL: call void @llvm.va_end(i8* [[VA1]])
// ALL: [[VECEXT:%.+]] = extractelement <4 x i32> [[PTR5]], i32 0
// ALL: ret i32 [[VECEXT]]
// ALL: }
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