ab7dba233a
Currently, the builtins used for implementing `va_list` handling unconditionally take their arguments as unqualified `ptr`s i.e. pointers to AS 0. This does not work for targets where the default AS is not 0 or AS 0 is not a viable AS (for example, a target might choose 0 to represent the constant address space). This patch changes the builtins' signature to take generic `anyptr` args, which corrects this issue. It is noisy due to the number of tests affected. A test for an upstream target which does not use 0 as its default AS (SPIRV for HIP device compilations) is added as well.
68 lines
3.7 KiB
C++
68 lines
3.7 KiB
C++
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
|
|
// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
|
|
|
|
typedef struct { struct {} a; } empty;
|
|
|
|
// CHECK-LABEL: @_Z17empty_record_testiz(
|
|
// CHECK-NEXT: entry:
|
|
// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_EMPTY:%.*]], align 1
|
|
// CHECK-NEXT: [[Z_ADDR:%.*]] = alloca i32, align 4
|
|
// CHECK-NEXT: [[LIST:%.*]] = alloca [1 x %struct.__va_list_tag], align 16
|
|
// CHECK-NEXT: [[TMP:%.*]] = alloca [[STRUCT_EMPTY]], align 1
|
|
// CHECK-NEXT: store i32 [[Z:%.*]], ptr [[Z_ADDR]], align 4
|
|
// CHECK-NEXT: [[ARRAYDECAY:%.*]] = getelementptr inbounds [1 x %struct.__va_list_tag], ptr [[LIST]], i64 0, i64 0
|
|
// CHECK-NEXT: call void @llvm.va_start.p0(ptr [[ARRAYDECAY]])
|
|
// CHECK-NEXT: [[ARRAYDECAY1:%.*]] = getelementptr inbounds [1 x %struct.__va_list_tag], ptr [[LIST]], i64 0, i64 0
|
|
// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 [[RETVAL]], ptr align 1 [[TMP]], i64 1, i1 false)
|
|
// CHECK-NEXT: ret void
|
|
//
|
|
empty empty_record_test(int z, ...) {
|
|
__builtin_va_list list;
|
|
__builtin_va_start(list, z);
|
|
return __builtin_va_arg(list, empty);
|
|
}
|
|
|
|
typedef struct {
|
|
struct{} a;
|
|
double b;
|
|
} s1;
|
|
|
|
// CHECK-LABEL: @_Z1fiz(
|
|
// CHECK-NEXT: entry:
|
|
// CHECK-NEXT: [[RETVAL:%.*]] = alloca [[STRUCT_S1:%.*]], align 8
|
|
// CHECK-NEXT: [[Z_ADDR:%.*]] = alloca i32, align 4
|
|
// CHECK-NEXT: [[LIST:%.*]] = alloca [1 x %struct.__va_list_tag], align 16
|
|
// CHECK-NEXT: store i32 [[Z:%.*]], ptr [[Z_ADDR]], align 4
|
|
// CHECK-NEXT: [[ARRAYDECAY:%.*]] = getelementptr inbounds [1 x %struct.__va_list_tag], ptr [[LIST]], i64 0, i64 0
|
|
// CHECK-NEXT: call void @llvm.va_start.p0(ptr [[ARRAYDECAY]])
|
|
// CHECK-NEXT: [[ARRAYDECAY1:%.*]] = getelementptr inbounds [1 x %struct.__va_list_tag], ptr [[LIST]], i64 0, i64 0
|
|
// CHECK-NEXT: [[FP_OFFSET_P:%.*]] = getelementptr inbounds [[STRUCT___VA_LIST_TAG:%.*]], ptr [[ARRAYDECAY1]], i32 0, i32 1
|
|
// CHECK-NEXT: [[FP_OFFSET:%.*]] = load i32, ptr [[FP_OFFSET_P]], align 4
|
|
// CHECK-NEXT: [[FITS_IN_FP:%.*]] = icmp ule i32 [[FP_OFFSET]], 160
|
|
// CHECK-NEXT: br i1 [[FITS_IN_FP]], label [[VAARG_IN_REG:%.*]], label [[VAARG_IN_MEM:%.*]]
|
|
// CHECK: vaarg.in_reg:
|
|
// CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[STRUCT___VA_LIST_TAG]], ptr [[ARRAYDECAY1]], i32 0, i32 3
|
|
// CHECK-NEXT: [[REG_SAVE_AREA:%.*]] = load ptr, ptr [[TMP0]], align 16
|
|
// CHECK-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[REG_SAVE_AREA]], i32 [[FP_OFFSET]]
|
|
// CHECK-NEXT: [[TMP2:%.*]] = add i32 [[FP_OFFSET]], 16
|
|
// CHECK-NEXT: store i32 [[TMP2]], ptr [[FP_OFFSET_P]], align 4
|
|
// CHECK-NEXT: br label [[VAARG_END:%.*]]
|
|
// CHECK: vaarg.in_mem:
|
|
// CHECK-NEXT: [[OVERFLOW_ARG_AREA_P:%.*]] = getelementptr inbounds [[STRUCT___VA_LIST_TAG]], ptr [[ARRAYDECAY1]], i32 0, i32 2
|
|
// CHECK-NEXT: [[OVERFLOW_ARG_AREA:%.*]] = load ptr, ptr [[OVERFLOW_ARG_AREA_P]], align 8
|
|
// CHECK-NEXT: [[OVERFLOW_ARG_AREA_NEXT:%.*]] = getelementptr i8, ptr [[OVERFLOW_ARG_AREA]], i32 16
|
|
// CHECK-NEXT: store ptr [[OVERFLOW_ARG_AREA_NEXT]], ptr [[OVERFLOW_ARG_AREA_P]], align 8
|
|
// CHECK-NEXT: br label [[VAARG_END]]
|
|
// CHECK: vaarg.end:
|
|
// CHECK-NEXT: [[VAARG_ADDR:%.*]] = phi ptr [ [[TMP1]], [[VAARG_IN_REG]] ], [ [[OVERFLOW_ARG_AREA]], [[VAARG_IN_MEM]] ]
|
|
// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[RETVAL]], ptr align 8 [[VAARG_ADDR]], i64 16, i1 false)
|
|
// CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i8, ptr [[RETVAL]], i64 8
|
|
// CHECK-NEXT: [[TMP4:%.*]] = load double, ptr [[TMP3]], align 8
|
|
// CHECK-NEXT: ret double [[TMP4]]
|
|
//
|
|
s1 f(int z, ...) {
|
|
__builtin_va_list list;
|
|
__builtin_va_start(list, z);
|
|
return __builtin_va_arg(list, s1);
|
|
}
|