diff options
Diffstat (limited to 'clang/test/CodeGen/voidptr-vaarg.c')
| -rw-r--r-- | clang/test/CodeGen/voidptr-vaarg.c | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/clang/test/CodeGen/voidptr-vaarg.c b/clang/test/CodeGen/voidptr-vaarg.c new file mode 100644 index 000000000000..d023ddf0fb5d --- /dev/null +++ b/clang/test/CodeGen/voidptr-vaarg.c @@ -0,0 +1,478 @@ +// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py +// REQUIRES: webassembly-registered-target +// RUN: %clang_cc1 -triple wasm32-unknown-unknown -emit-llvm -o - %s | FileCheck %s + +// Multiple targets use emitVoidPtrVAArg to lower va_arg instructions in clang +// PPC is complicated, excluding from this case analysis +// ForceRightAdjust is false for all non-PPC targets +// AllowHigherAlign is only false for two Microsoft targets, both of which +// pass most things by reference. +// +// Address emitVoidPtrVAArg(CodeGenFunction &CGF, Address VAListAddr, +// QualType ValueTy, bool IsIndirect, +// TypeInfoChars ValueInfo, CharUnits SlotSizeAndAlign, +// bool AllowHigherAlign, bool ForceRightAdjust = +// false); +// +// Target IsIndirect SlotSize AllowHigher ForceRightAdjust +// ARC false four true false +// ARM varies four true false +// Mips false 4 or 8 true false +// RISCV varies register true false +// PPC elided +// LoongArch varies register true false +// NVPTX WIP +// AMDGPU WIP +// X86_32 false four true false +// X86_64 MS varies eight false false +// CSKY false four true false +// Webassembly varies four true false +// AArch64 false eight true false +// AArch64 MS false eight false false +// +// Webassembly passes indirectly iff it's an aggregate of multiple values +// Choosing this as a representative architecture to check IR generation +// partly because it has a relatively simple variadic calling convention. + +// Int, by itself and packed in structs +// CHECK-LABEL: @raw_int( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARGP_CUR]], align 4 +// CHECK-NEXT: ret i32 [[TMP0]] +// +int raw_int(__builtin_va_list list) { return __builtin_va_arg(list, int); } + +typedef struct { + int x; +} one_int_t; + +// CHECK-LABEL: @one_int( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_ONE_INT_T:%.*]], align 4 +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[RETVAL]], ptr align 4 [[ARGP_CUR]], i32 4, i1 false) +// CHECK-NEXT: [[COERCE_DIVE:%.*]] = getelementptr inbounds [[STRUCT_ONE_INT_T]], ptr [[RETVAL]], i32 0, i32 0 +// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[COERCE_DIVE]], align 4 +// CHECK-NEXT: ret i32 [[TMP0]] +// +one_int_t one_int(__builtin_va_list list) { + return __builtin_va_arg(list, one_int_t); +} + +typedef struct { + int x; + int y; +} two_int_t; + +// CHECK-LABEL: @two_int( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[ARGP_CUR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[AGG_RESULT:%.*]], ptr align 4 [[TMP0]], i32 8, i1 false) +// CHECK-NEXT: ret void +// +two_int_t two_int(__builtin_va_list list) { + return __builtin_va_arg(list, two_int_t); +} + +// Double, by itself and packed in structs +// CHECK-LABEL: @raw_double( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 7 +// CHECK-NEXT: [[ARGP_CUR_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP0]], i32 -8) +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR_ALIGNED]], i32 8 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[ARGP_CUR_ALIGNED]], align 8 +// CHECK-NEXT: ret double [[TMP1]] +// +double raw_double(__builtin_va_list list) { + return __builtin_va_arg(list, double); +} + +typedef struct { + double x; +} one_double_t; + +// CHECK-LABEL: @one_double( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_ONE_DOUBLE_T:%.*]], align 8 +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 7 +// CHECK-NEXT: [[ARGP_CUR_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP0]], i32 -8) +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR_ALIGNED]], i32 8 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 8 [[RETVAL]], ptr align 8 [[ARGP_CUR_ALIGNED]], i32 8, i1 false) +// CHECK-NEXT: [[COERCE_DIVE:%.*]] = getelementptr inbounds [[STRUCT_ONE_DOUBLE_T]], ptr [[RETVAL]], i32 0, i32 0 +// CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[COERCE_DIVE]], align 8 +// CHECK-NEXT: ret double [[TMP1]] +// +one_double_t one_double(__builtin_va_list list) { + return __builtin_va_arg(list, one_double_t); +} + +typedef struct { + double x; + double y; +} two_double_t; + +// CHECK-LABEL: @two_double( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[ARGP_CUR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 8 [[AGG_RESULT:%.*]], ptr align 8 [[TMP0]], i32 16, i1 false) +// CHECK-NEXT: ret void +// +two_double_t two_double(__builtin_va_list list) { + return __builtin_va_arg(list, two_double_t); +} + +// Scalar smaller than the slot size (C would promote a short to int) +typedef struct { + char x; +} one_char_t; + +// CHECK-LABEL: @one_char( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_ONE_CHAR_T:%.*]], align 1 +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 [[RETVAL]], ptr align 4 [[ARGP_CUR]], i32 1, i1 false) +// CHECK-NEXT: [[COERCE_DIVE:%.*]] = getelementptr inbounds [[STRUCT_ONE_CHAR_T]], ptr [[RETVAL]], i32 0, i32 0 +// CHECK-NEXT: [[TMP0:%.*]] = load i8, ptr [[COERCE_DIVE]], align 1 +// CHECK-NEXT: ret i8 [[TMP0]] +// +one_char_t one_char(__builtin_va_list list) { + return __builtin_va_arg(list, one_char_t); +} + +typedef struct { + short x; +} one_short_t; + +// CHECK-LABEL: @one_short( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_ONE_SHORT_T:%.*]], align 2 +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[RETVAL]], ptr align 4 [[ARGP_CUR]], i32 2, i1 false) +// CHECK-NEXT: [[COERCE_DIVE:%.*]] = getelementptr inbounds [[STRUCT_ONE_SHORT_T]], ptr [[RETVAL]], i32 0, i32 0 +// CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr [[COERCE_DIVE]], align 2 +// CHECK-NEXT: ret i16 [[TMP0]] +// +one_short_t one_short(__builtin_va_list list) { + return __builtin_va_arg(list, one_short_t); +} + +// Composite smaller than the slot size +typedef struct { + _Alignas(2) char x; + char y; +} char_pair_t; + +// CHECK-LABEL: @char_pair( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[ARGP_CUR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[AGG_RESULT:%.*]], ptr align 2 [[TMP0]], i32 2, i1 false) +// CHECK-NEXT: ret void +// +char_pair_t char_pair(__builtin_va_list list) { + return __builtin_va_arg(list, char_pair_t); +} + +// Empty struct +typedef struct { +} empty_t; + +// CHECK-LABEL: @empty( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_EMPTY_T:%.*]], align 1 +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 0 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 [[RETVAL]], ptr align 4 [[ARGP_CUR]], i32 0, i1 false) +// CHECK-NEXT: ret void +// +empty_t empty(__builtin_va_list list) { + return __builtin_va_arg(list, empty_t); +} + +typedef struct { + empty_t x; + int y; +} empty_int_t; + +// CHECK-LABEL: @empty_int( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_EMPTY_INT_T:%.*]], align 4 +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[RETVAL]], ptr align 4 [[ARGP_CUR]], i32 4, i1 false) +// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[RETVAL]], align 4 +// CHECK-NEXT: ret i32 [[TMP0]] +// +empty_int_t empty_int(__builtin_va_list list) { + return __builtin_va_arg(list, empty_int_t); +} + +typedef struct { + int x; + empty_t y; +} int_empty_t; + +// CHECK-LABEL: @int_empty( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_INT_EMPTY_T:%.*]], align 4 +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[RETVAL]], ptr align 4 [[ARGP_CUR]], i32 4, i1 false) +// CHECK-NEXT: [[COERCE_DIVE:%.*]] = getelementptr inbounds [[STRUCT_INT_EMPTY_T]], ptr [[RETVAL]], i32 0, i32 0 +// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[COERCE_DIVE]], align 4 +// CHECK-NEXT: ret i32 [[TMP0]] +// +int_empty_t int_empty(__builtin_va_list list) { + return __builtin_va_arg(list, int_empty_t); +} + +// Need multiple va_arg instructions to check the postincrement +// Using types that are passed directly as the indirect handling +// is independent of the alignment handling in emitVoidPtrDirectVAArg. + +// CHECK-LABEL: @multiple_int( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT0_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT1_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT2_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT0:%.*]], ptr [[OUT0_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT1:%.*]], ptr [[OUT1_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT2:%.*]], ptr [[OUT2_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARGP_CUR]], align 4 +// CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[OUT0_ADDR]], align 4 +// CHECK-NEXT: store i32 [[TMP0]], ptr [[TMP1]], align 4 +// CHECK-NEXT: [[ARGP_CUR1:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT2:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR1]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT2]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARGP_CUR1]], align 4 +// CHECK-NEXT: [[TMP3:%.*]] = load ptr, ptr [[OUT1_ADDR]], align 4 +// CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP3]], align 4 +// CHECK-NEXT: [[ARGP_CUR3:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT4:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR3]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT4]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP4:%.*]] = load i32, ptr [[ARGP_CUR3]], align 4 +// CHECK-NEXT: [[TMP5:%.*]] = load ptr, ptr [[OUT2_ADDR]], align 4 +// CHECK-NEXT: store i32 [[TMP4]], ptr [[TMP5]], align 4 +// CHECK-NEXT: ret void +// +void multiple_int(__builtin_va_list list, int *out0, int *out1, int *out2) { + *out0 = __builtin_va_arg(list, int); + *out1 = __builtin_va_arg(list, int); + *out2 = __builtin_va_arg(list, int); +} + +// Scalars in structs are an easy way of specifying alignment from C +// CHECK-LABEL: @increasing_alignment( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT0_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT1_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT2_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT3_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT0:%.*]], ptr [[OUT0_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT1:%.*]], ptr [[OUT1_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT2:%.*]], ptr [[OUT2_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT3:%.*]], ptr [[OUT3_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[OUT0_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 [[TMP0]], ptr align 4 [[ARGP_CUR]], i32 1, i1 false) +// CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[OUT1_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR1:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT2:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR1]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT2]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[TMP1]], ptr align 4 [[ARGP_CUR1]], i32 2, i1 false) +// CHECK-NEXT: [[ARGP_CUR3:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT4:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR3]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT4]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARGP_CUR3]], align 4 +// CHECK-NEXT: [[TMP3:%.*]] = load ptr, ptr [[OUT2_ADDR]], align 4 +// CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP3]], align 4 +// CHECK-NEXT: [[ARGP_CUR5:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR5]], i32 7 +// CHECK-NEXT: [[ARGP_CUR5_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP4]], i32 -8) +// CHECK-NEXT: [[ARGP_NEXT6:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR5_ALIGNED]], i32 8 +// CHECK-NEXT: store ptr [[ARGP_NEXT6]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP5:%.*]] = load double, ptr [[ARGP_CUR5_ALIGNED]], align 8 +// CHECK-NEXT: [[TMP6:%.*]] = load ptr, ptr [[OUT3_ADDR]], align 4 +// CHECK-NEXT: store double [[TMP5]], ptr [[TMP6]], align 8 +// CHECK-NEXT: ret void +// +void increasing_alignment(__builtin_va_list list, one_char_t *out0, + one_short_t *out1, int *out2, double *out3) { + *out0 = __builtin_va_arg(list, one_char_t); + *out1 = __builtin_va_arg(list, one_short_t); + *out2 = __builtin_va_arg(list, int); + *out3 = __builtin_va_arg(list, double); +} + +// CHECK-LABEL: @decreasing_alignment( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT0_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT1_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT2_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT3_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT0:%.*]], ptr [[OUT0_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT1:%.*]], ptr [[OUT1_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT2:%.*]], ptr [[OUT2_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT3:%.*]], ptr [[OUT3_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 7 +// CHECK-NEXT: [[ARGP_CUR_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP0]], i32 -8) +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR_ALIGNED]], i32 8 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[ARGP_CUR_ALIGNED]], align 8 +// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[OUT0_ADDR]], align 4 +// CHECK-NEXT: store double [[TMP1]], ptr [[TMP2]], align 8 +// CHECK-NEXT: [[ARGP_CUR1:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT2:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR1]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT2]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[ARGP_CUR1]], align 4 +// CHECK-NEXT: [[TMP4:%.*]] = load ptr, ptr [[OUT1_ADDR]], align 4 +// CHECK-NEXT: store i32 [[TMP3]], ptr [[TMP4]], align 4 +// CHECK-NEXT: [[TMP5:%.*]] = load ptr, ptr [[OUT2_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR3:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT4:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR3]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT4]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 2 [[TMP5]], ptr align 4 [[ARGP_CUR3]], i32 2, i1 false) +// CHECK-NEXT: [[TMP6:%.*]] = load ptr, ptr [[OUT3_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR5:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT6:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR5]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT6]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 [[TMP6]], ptr align 4 [[ARGP_CUR5]], i32 1, i1 false) +// CHECK-NEXT: ret void +// +void decreasing_alignment(__builtin_va_list list, double *out0, int *out1, + one_short_t *out2, one_char_t *out3) { + *out0 = __builtin_va_arg(list, double); + *out1 = __builtin_va_arg(list, int); + *out2 = __builtin_va_arg(list, one_short_t); + *out3 = __builtin_va_arg(list, one_char_t); +} + +// Typical edge cases, none hit special handling in VAArg lowering. +typedef struct { + int x[16]; + double y[8]; +} large_value_t; + +// CHECK-LABEL: @large_value( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT:%.*]], ptr [[OUT_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[OUT_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[ARGP_CUR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 8 [[TMP0]], ptr align 8 [[TMP1]], i32 128, i1 false) +// CHECK-NEXT: ret void +// +void large_value(__builtin_va_list list, large_value_t *out) { + *out = __builtin_va_arg(list, large_value_t); +} + +typedef int v128_t __attribute__((__vector_size__(16), __aligned__(16))); +// CHECK-LABEL: @vector( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT:%.*]], ptr [[OUT_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 15 +// CHECK-NEXT: [[ARGP_CUR_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP0]], i32 -16) +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR_ALIGNED]], i32 16 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP1:%.*]] = load <4 x i32>, ptr [[ARGP_CUR_ALIGNED]], align 16 +// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[OUT_ADDR]], align 4 +// CHECK-NEXT: store <4 x i32> [[TMP1]], ptr [[TMP2]], align 16 +// CHECK-NEXT: ret void +// +void vector(__builtin_va_list list, v128_t *out) { + *out = __builtin_va_arg(list, v128_t); +} + +typedef struct BF { + float not_an_i32[2]; + int A : 1; + char B; + int C : 13; +} BF; + +// CHECK-LABEL: @bitfield( +// CHECK-NEXT: entry: +// CHECK-NEXT: [[LIST_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: [[OUT_ADDR:%.*]] = alloca ptr, align 4 +// CHECK-NEXT: store ptr [[LIST:%.*]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: store ptr [[OUT:%.*]], ptr [[OUT_ADDR]], align 4 +// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[OUT_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4 +// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[LIST_ADDR]], align 4 +// CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[ARGP_CUR]], align 4 +// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[TMP0]], ptr align 4 [[TMP1]], i32 12, i1 false) +// CHECK-NEXT: ret void +// +void bitfield(__builtin_va_list list, BF *out) { + *out = __builtin_va_arg(list, BF); +} |