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6e938effaa
Summary: Upstream LLVM is changing the the prototypes of the @llvm.memcpy/memmove/memset intrinsics. This change updates the Clang tests for this change. The @llvm.memcpy/memmove/memset intrinsics currently have an explicit argument which is required to be a constant integer. It represents the alignment of the dest (and source), and so must be the minimum of the actual alignment of the two. This change removes the alignment argument in favour of placing the alignment attribute on the source and destination pointers of the memory intrinsic call. For example, code which used to read: call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 100, i32 4, i1 false) will now read call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %dest, i8* align 4 %src, i32 100, i1 false) At this time the source and destination alignments must be the same (Step 1). Step 2 of the change, to be landed shortly, will relax that contraint and allow the source and destination to have different alignments. llvm-svn: 322964
75 lines
2.9 KiB
C
75 lines
2.9 KiB
C
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=arm64-apple-ios7 | FileCheck %s
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// Memory ordering values.
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enum {
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memory_order_relaxed = 0,
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memory_order_consume = 1,
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memory_order_acquire = 2,
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memory_order_release = 3,
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memory_order_acq_rel = 4,
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memory_order_seq_cst = 5
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};
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typedef struct { void *a, *b; } pointer_pair_t;
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typedef struct { void *a, *b, *c, *d; } pointer_quad_t;
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// rdar://13489679
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extern _Atomic(_Bool) a_bool;
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extern _Atomic(float) a_float;
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extern _Atomic(void*) a_pointer;
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extern _Atomic(pointer_pair_t) a_pointer_pair;
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extern _Atomic(pointer_quad_t) a_pointer_quad;
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// CHECK-LABEL:define void @test0()
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// CHECK: [[TEMP:%.*]] = alloca i8, align 1
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// CHECK-NEXT: store i8 1, i8* [[TEMP]]
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// CHECK-NEXT: [[T0:%.*]] = load i8, i8* [[TEMP]], align 1
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// CHECK-NEXT: store atomic i8 [[T0]], i8* @a_bool seq_cst, align 1
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void test0() {
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__c11_atomic_store(&a_bool, 1, memory_order_seq_cst);
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}
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// CHECK-LABEL:define void @test1()
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// CHECK: [[TEMP:%.*]] = alloca float, align 4
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// CHECK-NEXT: store float 3.000000e+00, float* [[TEMP]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast float* [[TEMP]] to i32*
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// CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[T0]], align 4
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// CHECK-NEXT: store atomic i32 [[T1]], i32* bitcast (float* @a_float to i32*) seq_cst, align 4
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void test1() {
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__c11_atomic_store(&a_float, 3, memory_order_seq_cst);
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}
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// CHECK-LABEL:define void @test2()
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// CHECK: [[TEMP:%.*]] = alloca i8*, align 8
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// CHECK-NEXT: store i8* @a_bool, i8** [[TEMP]]
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// CHECK-NEXT: [[T0:%.*]] = bitcast i8** [[TEMP]] to i64*
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// CHECK-NEXT: [[T1:%.*]] = load i64, i64* [[T0]], align 8
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// CHECK-NEXT: store atomic i64 [[T1]], i64* bitcast (i8** @a_pointer to i64*) seq_cst, align 8
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void test2() {
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__c11_atomic_store(&a_pointer, &a_bool, memory_order_seq_cst);
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}
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// CHECK-LABEL:define void @test3(
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// CHECK: [[PAIR:%.*]] = alloca [[PAIR_T:%.*]], align 8
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// CHECK-NEXT: [[TEMP:%.*]] = alloca [[PAIR_T]], align 8
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// CHECK: llvm.memcpy
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[PAIR_T]]* [[TEMP]] to i128*
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// CHECK-NEXT: [[T1:%.*]] = load i128, i128* [[T0]], align 8
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// CHECK-NEXT: store atomic i128 [[T1]], i128* bitcast ([[PAIR_T]]* @a_pointer_pair to i128*) seq_cst, align 16
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void test3(pointer_pair_t pair) {
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__c11_atomic_store(&a_pointer_pair, pair, memory_order_seq_cst);
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}
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// CHECK-LABEL:define void @test4(
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// CHECK: [[TEMP:%.*]] = alloca [[QUAD_T:%.*]], align 8
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[QUAD_T]]* [[TEMP]] to i8*
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// CHECK-NEXT: [[T1:%.*]] = bitcast [[QUAD_T]]* {{%.*}} to i8*
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// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[T0]], i8* align 8 [[T1]], i64 32, i1 false)
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// CHECK-NEXT: [[T0:%.*]] = bitcast [[QUAD_T]]* [[TEMP]] to i256*
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// CHECK-NEXT: [[T1:%.*]] = bitcast i256* [[T0]] to i8*
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// CHECK-NEXT: call void @__atomic_store(i64 32, i8* bitcast ([[QUAD_T]]* @a_pointer_quad to i8*), i8* [[T1]], i32 5)
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void test4(pointer_quad_t quad) {
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__c11_atomic_store(&a_pointer_quad, quad, memory_order_seq_cst);
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}
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