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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.
47 lines
2.4 KiB
C
47 lines
2.4 KiB
C
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 4
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// RUN: %clang_cc1 -triple spirv64-unknown-unknown -fcuda-is-device -emit-llvm -o - %s | FileCheck %s
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struct x {
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double b;
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long a;
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};
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// CHECK-LABEL: define spir_func void @testva(
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// CHECK-SAME: i32 noundef [[N:%.*]], ...) #[[ATTR0:[0-9]+]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[N_ADDR:%.*]] = alloca i32, align 4
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// CHECK-NEXT: [[AP:%.*]] = alloca ptr addrspace(4), align 8
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// CHECK-NEXT: [[T:%.*]] = alloca [[STRUCT_X:%.*]], align 8
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// CHECK-NEXT: [[AP2:%.*]] = alloca ptr addrspace(4), align 8
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// CHECK-NEXT: [[V:%.*]] = alloca i32, align 4
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// CHECK-NEXT: [[VARET:%.*]] = alloca i32, align 4
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// CHECK-NEXT: [[N_ADDR_ASCAST:%.*]] = addrspacecast ptr [[N_ADDR]] to ptr addrspace(4)
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// CHECK-NEXT: [[AP_ASCAST:%.*]] = addrspacecast ptr [[AP]] to ptr addrspace(4)
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// CHECK-NEXT: [[T_ASCAST:%.*]] = addrspacecast ptr [[T]] to ptr addrspace(4)
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// CHECK-NEXT: [[AP2_ASCAST:%.*]] = addrspacecast ptr [[AP2]] to ptr addrspace(4)
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// CHECK-NEXT: [[V_ASCAST:%.*]] = addrspacecast ptr [[V]] to ptr addrspace(4)
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// CHECK-NEXT: [[VARET_ASCAST:%.*]] = addrspacecast ptr [[VARET]] to ptr addrspace(4)
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// CHECK-NEXT: store i32 [[N]], ptr addrspace(4) [[N_ADDR_ASCAST]], align 4
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// CHECK-NEXT: call void @llvm.va_start.p4(ptr addrspace(4) [[AP_ASCAST]])
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// CHECK-NEXT: [[TMP0:%.*]] = va_arg ptr addrspace(4) [[AP_ASCAST]], ptr
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// CHECK-NEXT: call void @llvm.memcpy.p4.p0.i64(ptr addrspace(4) align 8 [[T_ASCAST]], ptr align 8 [[TMP0]], i64 16, i1 false)
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// CHECK-NEXT: call void @llvm.va_copy.p4(ptr addrspace(4) [[AP2_ASCAST]], ptr addrspace(4) [[AP_ASCAST]])
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// CHECK-NEXT: [[TMP1:%.*]] = va_arg ptr addrspace(4) [[AP2_ASCAST]], i32
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// CHECK-NEXT: store i32 [[TMP1]], ptr addrspace(4) [[VARET_ASCAST]], align 4
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// CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr addrspace(4) [[VARET_ASCAST]], align 4
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// CHECK-NEXT: store i32 [[TMP2]], ptr addrspace(4) [[V_ASCAST]], align 4
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// CHECK-NEXT: call void @llvm.va_end.p4(ptr addrspace(4) [[AP2_ASCAST]])
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// CHECK-NEXT: call void @llvm.va_end.p4(ptr addrspace(4) [[AP_ASCAST]])
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// CHECK-NEXT: ret void
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void testva(int n, ...) {
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__builtin_va_list ap;
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__builtin_va_start(ap, n);
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struct x t = __builtin_va_arg(ap, struct x);
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__builtin_va_list ap2;
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__builtin_va_copy(ap2, ap);
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int v = __builtin_va_arg(ap2, int);
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__builtin_va_end(ap2);
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__builtin_va_end(ap);
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}
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