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// RUN: %clang_cc1 -triple mips-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,O32 -enable-var-scope
// RUN: %clang_cc1 -triple mipsel-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,O32 -enable-var-scope
// RUN: %clang_cc1 -triple mips64-unknown-linux -o - -emit-llvm -target-abi n32 %s | FileCheck %s -check-prefixes=ALL,N32,NEW -enable-var-scope
// RUN: %clang_cc1 -triple mips64-unknown-linux -o - -emit-llvm -target-abi n32 %s | FileCheck %s -check-prefixes=ALL,N32,NEW -enable-var-scope
// RUN: %clang_cc1 -triple mips64-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,N64,NEW -enable-var-scope
// RUN: %clang_cc1 -triple mips64el-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,N64,NEW -enable-var-scope
#include <stdarg.h>
typedef int v4i32 __attribute__ ((__vector_size__ (16)));
int test_i32(char *fmt, ...) {
va_list va;
va_start(va, fmt);
int v = va_arg(va, int);
va_end(va);
return v;
}
// O32-LABEL: define{{.*}} i32 @test_i32(ptr{{.*}} %fmt, ...)
// N32-LABEL: define{{.*}} signext i32 @test_i32(ptr{{.*}} %fmt, ...)
// N64-LABEL: define{{.*}} signext i32 @test_i32(ptr{{.*}} %fmt, ...)
//
// O32: %va = alloca ptr, align [[$PTRALIGN:4]]
// N32: %va = alloca ptr, align [[$PTRALIGN:4]]
// N64: %va = alloca ptr, align [[$PTRALIGN:8]]
// ALL: [[V:%.*]] = alloca i32, align 4
// NEW: [[PROMOTION_TEMP:%.*]] = alloca i32, align 4
//
// ALL: call void @llvm.va_start(ptr %va)
// ALL: [[AP_CUR:%.+]] = load ptr, ptr %va, align [[$PTRALIGN]]
// O32: [[AP_NEXT:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], [[$INTPTR_T:i32]] [[$CHUNKSIZE:4]]
// NEW: [[AP_NEXT:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], [[$INTPTR_T:i32|i64]] [[$CHUNKSIZE:8]]
//
// ALL: store ptr [[AP_NEXT]], ptr %va, align [[$PTRALIGN]]
//
// O32: [[ARG:%.+]] = load i32, ptr [[AP_CUR]], align [[CHUNKALIGN:4]]
//
// N32: [[TMP:%.+]] = load i64, ptr [[AP_CUR]], align [[CHUNKALIGN:8]]
// N64: [[TMP:%.+]] = load i64, ptr [[AP_CUR]], align [[CHUNKALIGN:8]]
// NEW: [[TMP2:%.+]] = trunc i64 [[TMP]] to i32
// NEW: store i32 [[TMP2]], ptr [[PROMOTION_TEMP]], align 4
// NEW: [[ARG:%.+]] = load i32, ptr [[PROMOTION_TEMP]], align 4
// ALL: store i32 [[ARG]], ptr [[V]], align 4
//
// ALL: call void @llvm.va_end(ptr %va)
// ALL: }
long long test_i64(char *fmt, ...) {
va_list va;
va_start(va, fmt);
long long v = va_arg(va, long long);
va_end(va);
return v;
}
// ALL-LABEL: define{{.*}} i64 @test_i64(ptr{{.*}} %fmt, ...)
//
// ALL: %va = alloca ptr, align [[$PTRALIGN]]
// ALL: call void @llvm.va_start(ptr %va)
// ALL: [[AP_CUR:%.+]] = load ptr, ptr %va, align [[$PTRALIGN]]
//
// i64 is 8-byte aligned, while this is within O32's stack alignment there's no
// guarantee that the offset is still 8-byte aligned after earlier reads.
// O32: [[TMP1:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], i32 7
// O32: [[AP_CUR:%.+]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP1]], i32 -8)
//
// ALL: [[AP_NEXT:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], [[$INTPTR_T]] 8
// ALL: store ptr [[AP_NEXT]], ptr %va, align [[$PTRALIGN]]
//
// ALL: [[ARG:%.+]] = load i64, ptr [[AP_CUR]], align 8
//
// ALL: call void @llvm.va_end(ptr %va)
// ALL: }
char *test_ptr(char *fmt, ...) {
va_list va;
va_start(va, fmt);
char *v = va_arg(va, char *);
va_end(va);
return v;
}
// ALL-LABEL: define{{.*}} ptr @test_ptr(ptr{{.*}} %fmt, ...)
//
// ALL: %va = alloca ptr, align [[$PTRALIGN]]
// ALL: [[V:%.*]] = alloca ptr, align [[$PTRALIGN]]
// N32: [[AP_CAST:%.+]] = alloca ptr, align 4
// ALL: call void @llvm.va_start(ptr %va)
// ALL: [[AP_CUR:%.+]] = load ptr, ptr %va, align [[$PTRALIGN]]
// ALL: [[AP_NEXT:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], [[$INTPTR_T]] [[$CHUNKSIZE]]
// ALL: store ptr [[AP_NEXT]], ptr %va, align [[$PTRALIGN]]
//
// When the chunk size matches the pointer size, this is easy.
// Otherwise we need a promotion temporary.
// N32: [[TMP2:%.+]] = load i64, ptr [[AP_CUR]], align 8
// N32: [[TMP3:%.+]] = trunc i64 [[TMP2]] to i32
// N32: [[PTR:%.+]] = inttoptr i32 [[TMP3]] to ptr
// N32: store ptr [[PTR]], ptr [[AP_CAST]], align 4
// N32: [[ARG:%.+]] = load ptr, ptr [[AP_CAST]], align [[$PTRALIGN]]
//
// O32: [[ARG:%.+]] = load ptr, ptr [[AP_CUR]], align [[$PTRALIGN]]
// N64: [[ARG:%.+]] = load ptr, ptr [[AP_CUR]], align [[$PTRALIGN]]
// ALL: store ptr [[ARG]], ptr [[V]], align [[$PTRALIGN]]
//
// ALL: call void @llvm.va_end(ptr %va)
// ALL: }
int test_v4i32(char *fmt, ...) {
va_list va;
va_start(va, fmt);
v4i32 v = va_arg(va, v4i32);
va_end(va);
return v[0];
}
// O32-LABEL: define{{.*}} i32 @test_v4i32(ptr{{.*}} %fmt, ...)
// N32-LABEL: define{{.*}} signext i32 @test_v4i32(ptr{{.*}} %fmt, ...)
// N64-LABEL: define{{.*}} signext i32 @test_v4i32(ptr{{.*}} %fmt, ...)
//
// ALL: %va = alloca ptr, align [[$PTRALIGN]]
// ALL: [[V:%.+]] = alloca <4 x i32>, align 16
// ALL: call void @llvm.va_start(ptr %va)
// ALL: [[AP_CUR:%.+]] = load ptr, ptr %va, align [[$PTRALIGN]]
//
// Vectors are 16-byte aligned, however the O32 ABI has a maximum alignment of
// 8-bytes since the base of the stack is 8-byte aligned.
// O32: [[TMP1:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], i32 7
// O32: [[AP_CUR:%.+]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP1]], i32 -8)
// N32: [[TMP1:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], i32 15
// N32: [[AP_CUR:%.+]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP1]], i32 -16)
// N64: [[TMP1:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], i32 15
// N64: [[AP_CUR:%.+]] = call ptr @llvm.ptrmask.p0.i64(ptr [[TMP1]], i64 -16)
//
// ALL: [[AP_NEXT:%.+]] = getelementptr inbounds i8, ptr [[AP_CUR]], [[$INTPTR_T]] 16
// ALL: store ptr [[AP_NEXT]], ptr %va, align [[$PTRALIGN]]
//
// O32: [[ARG:%.+]] = load <4 x i32>, ptr [[AP_CUR]], align 8
// N64: [[ARG:%.+]] = load <4 x i32>, ptr [[AP_CUR]], align 16
// N32: [[ARG:%.+]] = load <4 x i32>, ptr [[AP_CUR]], align 16
// ALL: store <4 x i32> [[ARG]], ptr [[V]], align 16
//
// ALL: call void @llvm.va_end(ptr %va)
// ALL: [[VECEXT:%.+]] = extractelement <4 x i32> {{.*}}, i32 0
// ALL: ret i32 [[VECEXT]]
// ALL: }
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