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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.
129 lines
5.0 KiB
C
129 lines
5.0 KiB
C
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature
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// RUN: %clang_cc1 -triple wasm32-unknown-unknown -o - -emit-llvm %s | FileCheck %s
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#include <stdarg.h>
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// CHECK-LABEL: define {{[^@]+}}@test_i32
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// CHECK-SAME: (ptr noundef [[FMT:%.*]], ...) #[[ATTR0:[0-9]+]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[FMT_ADDR:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: [[VA:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: [[V:%.*]] = alloca i32, align 4
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// CHECK-NEXT: store ptr [[FMT]], ptr [[FMT_ADDR]], align 4
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// CHECK-NEXT: call void @llvm.va_start.p0(ptr [[VA]])
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// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 4
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// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4
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// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[VA]], align 4
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// CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARGP_CUR]], align 4
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// CHECK-NEXT: store i32 [[TMP0]], ptr [[V]], align 4
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// CHECK-NEXT: call void @llvm.va_end.p0(ptr [[VA]])
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// CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[V]], align 4
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// CHECK-NEXT: ret i32 [[TMP1]]
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//
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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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// CHECK-LABEL: define {{[^@]+}}@test_i64
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// CHECK-SAME: (ptr noundef [[FMT:%.*]], ...) #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[FMT_ADDR:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: [[VA:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: [[V:%.*]] = alloca i64, align 8
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// CHECK-NEXT: store ptr [[FMT]], ptr [[FMT_ADDR]], align 4
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// CHECK-NEXT: call void @llvm.va_start.p0(ptr [[VA]])
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// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 4
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// CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 7
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// CHECK-NEXT: [[ARGP_CUR_ALIGNED:%.*]] = call ptr @llvm.ptrmask.p0.i32(ptr [[TMP0]], i32 -8)
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// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR_ALIGNED]], i32 8
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// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[VA]], align 4
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// CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr [[ARGP_CUR_ALIGNED]], align 8
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// CHECK-NEXT: store i64 [[TMP1]], ptr [[V]], align 8
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// CHECK-NEXT: call void @llvm.va_end.p0(ptr [[VA]])
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// CHECK-NEXT: [[TMP2:%.*]] = load i64, ptr [[V]], align 8
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// CHECK-NEXT: ret i64 [[TMP2]]
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//
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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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struct S {
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int x;
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int y;
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int z;
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};
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// CHECK-LABEL: define {{[^@]+}}@test_struct
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// CHECK-SAME: (ptr dead_on_unwind noalias writable sret([[STRUCT_S:%.*]]) align 4 [[AGG_RESULT:%.*]], ptr noundef [[FMT:%.*]], ...) #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[FMT_ADDR:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: [[VA:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: store ptr [[FMT]], ptr [[FMT_ADDR]], align 4
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// CHECK-NEXT: call void @llvm.va_start.p0(ptr [[VA]])
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// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 4
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// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 4
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// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[VA]], align 4
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// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[ARGP_CUR]], align 4
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// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[AGG_RESULT]], ptr align 4 [[TMP0]], i32 12, i1 false)
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// CHECK-NEXT: call void @llvm.va_end.p0(ptr [[VA]])
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// CHECK-NEXT: ret void
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//
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struct S test_struct(char *fmt, ...) {
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va_list va;
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va_start(va, fmt);
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struct S v = va_arg(va, struct S);
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va_end(va);
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return v;
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}
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struct Z {};
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// CHECK-LABEL: define {{[^@]+}}@test_empty_struct
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// CHECK-SAME: (ptr dead_on_unwind noalias writable sret([[STRUCT_S:%.*]]) align 4 [[AGG_RESULT:%.*]], ptr noundef [[FMT:%.*]], ...) #[[ATTR0]] {
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[FMT_ADDR:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: [[VA:%.*]] = alloca ptr, align 4
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// CHECK-NEXT: [[U:%.*]] = alloca [[STRUCT_Z:%.*]], align 1
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// CHECK-NEXT: store ptr [[FMT]], ptr [[FMT_ADDR]], align 4
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// CHECK-NEXT: call void @llvm.va_start.p0(ptr [[VA]])
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// CHECK-NEXT: [[ARGP_CUR:%.*]] = load ptr, ptr [[VA]], align 4
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// CHECK-NEXT: [[ARGP_NEXT:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR]], i32 0
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// CHECK-NEXT: store ptr [[ARGP_NEXT]], ptr [[VA]], align 4
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// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 1 [[U]], ptr align 4 [[ARGP_CUR]], i32 0, i1 false)
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// CHECK-NEXT: [[ARGP_CUR1:%.*]] = load ptr, ptr [[VA]], align 4
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// CHECK-NEXT: [[ARGP_NEXT2:%.*]] = getelementptr inbounds i8, ptr [[ARGP_CUR1]], i32 4
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// CHECK-NEXT: store ptr [[ARGP_NEXT2]], ptr [[VA]], align 4
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// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[ARGP_CUR1]], align 4
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// CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr align 4 [[AGG_RESULT]], ptr align 4 [[TMP0]], i32 12, i1 false)
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// CHECK-NEXT: call void @llvm.va_end.p0(ptr [[VA]])
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// CHECK-NEXT: ret void
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//
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struct S test_empty_struct(char *fmt, ...) {
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va_list va;
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va_start(va, fmt);
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struct Z u = va_arg(va, struct Z);
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struct S v = va_arg(va, struct S);
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va_end(va);
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return v;
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}
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