170 lines
6.7 KiB
C
170 lines
6.7 KiB
C
// RUN: %clang_cc1 -triple mips-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,O32 -enable-var-scope
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// RUN: %clang_cc1 -triple mipsel-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,O32 -enable-var-scope
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// RUN: %clang_cc1 -triple mips64-unknown-linux -o - -emit-llvm -target-abi n32 %s | FileCheck %s -check-prefixes=ALL,N32,NEW -enable-var-scope
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// RUN: %clang_cc1 -triple mips64-unknown-linux -o - -emit-llvm -target-abi n32 %s | FileCheck %s -check-prefixes=ALL,N32,NEW -enable-var-scope
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// RUN: %clang_cc1 -triple mips64-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,N64,NEW -enable-var-scope
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// RUN: %clang_cc1 -triple mips64el-unknown-linux -o - -emit-llvm %s | FileCheck %s -check-prefixes=ALL,N64,NEW -enable-var-scope
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#include <stdarg.h>
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typedef int v4i32 __attribute__ ((__vector_size__ (16)));
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int test_i32(char *fmt, ...) {
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va_list va;
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va_start(va, fmt);
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int v = va_arg(va, int);
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va_end(va);
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return v;
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}
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// ALL-LABEL: define i32 @test_i32(i8*{{.*}} %fmt, ...)
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//
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// O32: %va = alloca i8*, align [[$PTRALIGN:4]]
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// N32: %va = alloca i8*, align [[$PTRALIGN:4]]
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// N64: %va = alloca i8*, align [[$PTRALIGN:8]]
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// ALL: [[V:%.*]] = alloca i32, align 4
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// NEW: [[PROMOTION_TEMP:%.*]] = alloca i32, align 4
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//
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// ALL: [[VA:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_start(i8* [[VA]])
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// ALL: [[AP_CUR:%.+]] = load i8*, i8** %va, align [[$PTRALIGN]]
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// O32: [[AP_NEXT:%.+]] = getelementptr inbounds i8, i8* [[AP_CUR]], [[$INTPTR_T:i32]] [[$CHUNKSIZE:4]]
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// NEW: [[AP_NEXT:%.+]] = getelementptr inbounds i8, i8* [[AP_CUR]], [[$INTPTR_T:i32|i64]] [[$CHUNKSIZE:8]]
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//
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// ALL: store i8* [[AP_NEXT]], i8** %va, align [[$PTRALIGN]]
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//
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// O32: [[AP_CAST:%.+]] = bitcast i8* [[AP_CUR]] to [[CHUNK_T:i32]]*
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// O32: [[ARG:%.+]] = load i32, i32* [[AP_CAST]], align [[CHUNKALIGN:4]]
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//
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// N32: [[AP_CAST:%.+]] = bitcast i8* [[AP_CUR]] to [[CHUNK_T:i64]]*
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// N32: [[TMP:%.+]] = load i64, i64* [[AP_CAST]], align [[CHUNKALIGN:8]]
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// N64: [[AP_CAST:%.+]] = bitcast i8* [[AP_CUR]] to [[CHUNK_T:i64]]*
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// N64: [[TMP:%.+]] = load i64, i64* [[AP_CAST]], align [[CHUNKALIGN:8]]
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// NEW: [[TMP2:%.+]] = trunc i64 [[TMP]] to i32
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// NEW: store i32 [[TMP2]], i32* [[PROMOTION_TEMP]], align 4
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// NEW: [[ARG:%.+]] = load i32, i32* [[PROMOTION_TEMP]], align 4
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// ALL: store i32 [[ARG]], i32* [[V]], align 4
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//
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// ALL: [[VA1:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_end(i8* [[VA1]])
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// ALL: }
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long long test_i64(char *fmt, ...) {
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va_list va;
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va_start(va, fmt);
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long long v = va_arg(va, long long);
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va_end(va);
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return v;
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}
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// ALL-LABEL: define i64 @test_i64(i8*{{.*}} %fmt, ...)
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//
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// ALL: %va = alloca i8*, align [[$PTRALIGN]]
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// ALL: [[VA:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_start(i8* [[VA]])
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// ALL: [[AP_CUR:%.+]] = load i8*, i8** %va, align [[$PTRALIGN]]
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//
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// i64 is 8-byte aligned, while this is within O32's stack alignment there's no
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// guarantee that the offset is still 8-byte aligned after earlier reads.
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// O32: [[TMP1:%.+]] = ptrtoint i8* [[AP_CUR]] to i32
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// O32: [[TMP2:%.+]] = add i32 [[TMP1]], 7
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// O32: [[TMP3:%.+]] = and i32 [[TMP2]], -8
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// O32: [[AP_CUR:%.+]] = inttoptr i32 [[TMP3]] to i8*
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//
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// ALL: [[AP_NEXT:%.+]] = getelementptr inbounds i8, i8* [[AP_CUR]], [[$INTPTR_T]] 8
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// ALL: store i8* [[AP_NEXT]], i8** %va, align [[$PTRALIGN]]
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//
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// ALL: [[AP_CAST:%.*]] = bitcast i8* [[AP_CUR]] to i64*
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// ALL: [[ARG:%.+]] = load i64, i64* [[AP_CAST]], align 8
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//
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// ALL: [[VA1:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_end(i8* [[VA1]])
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// ALL: }
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char *test_ptr(char *fmt, ...) {
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va_list va;
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va_start(va, fmt);
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char *v = va_arg(va, char *);
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va_end(va);
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return v;
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}
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// ALL-LABEL: define i8* @test_ptr(i8*{{.*}} %fmt, ...)
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//
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// ALL: %va = alloca i8*, align [[$PTRALIGN]]
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// ALL: [[V:%.*]] = alloca i8*, align [[$PTRALIGN]]
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// N32: [[AP_CAST:%.+]] = alloca i8*, align 4
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// ALL: [[VA:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_start(i8* [[VA]])
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// ALL: [[AP_CUR:%.+]] = load i8*, i8** %va, align [[$PTRALIGN]]
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// ALL: [[AP_NEXT:%.+]] = getelementptr inbounds i8, i8* [[AP_CUR]], [[$INTPTR_T]] [[$CHUNKSIZE]]
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// ALL: store i8* [[AP_NEXT]], i8** %va, align [[$PTRALIGN]]
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//
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// When the chunk size matches the pointer size, this is easy.
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// O32: [[AP_CAST:%.+]] = bitcast i8* [[AP_CUR]] to i8**
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// N64: [[AP_CAST:%.+]] = bitcast i8* [[AP_CUR]] to i8**
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// Otherwise we need a promotion temporary.
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// N32: [[TMP1:%.+]] = bitcast i8* [[AP_CUR]] to i64*
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// N32: [[TMP2:%.+]] = load i64, i64* [[TMP1]], align 8
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// N32: [[TMP3:%.+]] = trunc i64 [[TMP2]] to i32
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// N32: [[PTR:%.+]] = inttoptr i32 [[TMP3]] to i8*
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// N32: store i8* [[PTR]], i8** [[AP_CAST]], align 4
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//
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// ALL: [[ARG:%.+]] = load i8*, i8** [[AP_CAST]], align [[$PTRALIGN]]
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// ALL: store i8* [[ARG]], i8** [[V]], align [[$PTRALIGN]]
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//
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// ALL: [[VA1:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_end(i8* [[VA1]])
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// ALL: }
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int test_v4i32(char *fmt, ...) {
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va_list va;
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va_start(va, fmt);
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v4i32 v = va_arg(va, v4i32);
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va_end(va);
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return v[0];
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}
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// ALL-LABEL: define i32 @test_v4i32(i8*{{.*}} %fmt, ...)
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//
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// ALL: %va = alloca i8*, align [[$PTRALIGN]]
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// ALL: [[V:%.+]] = alloca <4 x i32>, align 16
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// ALL: [[VA1:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_start(i8* [[VA1]])
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// ALL: [[AP_CUR:%.+]] = load i8*, i8** %va, align [[$PTRALIGN]]
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//
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// Vectors are 16-byte aligned, however the O32 ABI has a maximum alignment of
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// 8-bytes since the base of the stack is 8-byte aligned.
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// O32: [[TMP1:%.+]] = ptrtoint i8* [[AP_CUR]] to i32
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// O32: [[TMP2:%.+]] = add i32 [[TMP1]], 7
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// O32: [[TMP3:%.+]] = and i32 [[TMP2]], -8
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// O32: [[AP_CUR:%.+]] = inttoptr i32 [[TMP3]] to i8*
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//
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// NEW: [[TMP1:%.+]] = ptrtoint i8* [[AP_CUR]] to [[$INTPTR_T]]
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// NEW: [[TMP2:%.+]] = add [[$INTPTR_T]] [[TMP1]], 15
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// NEW: [[TMP3:%.+]] = and [[$INTPTR_T]] [[TMP2]], -16
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// NEW: [[AP_CUR:%.+]] = inttoptr [[$INTPTR_T]] [[TMP3]] to i8*
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//
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// ALL: [[AP_NEXT:%.+]] = getelementptr inbounds i8, i8* [[AP_CUR]], [[$INTPTR_T]] 16
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// ALL: store i8* [[AP_NEXT]], i8** %va, align [[$PTRALIGN]]
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//
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// ALL: [[AP_CAST:%.+]] = bitcast i8* [[AP_CUR]] to <4 x i32>*
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// O32: [[ARG:%.+]] = load <4 x i32>, <4 x i32>* [[AP_CAST]], align 8
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// N64: [[ARG:%.+]] = load <4 x i32>, <4 x i32>* [[AP_CAST]], align 16
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// N32: [[ARG:%.+]] = load <4 x i32>, <4 x i32>* [[AP_CAST]], align 16
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// ALL: store <4 x i32> [[ARG]], <4 x i32>* [[V]], align 16
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//
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// ALL: [[VA1:%.+]] = bitcast i8** %va to i8*
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// ALL: call void @llvm.va_end(i8* [[VA1]])
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// ALL: [[VECEXT:%.+]] = extractelement <4 x i32> {{.*}}, i32 0
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// ALL: ret i32 [[VECEXT]]
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// ALL: }
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