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
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - -O1 %s | FileCheck %s
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//
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// Check that we generate !tbaa.struct metadata for struct copies.
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struct A {
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short s;
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int i;
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char c;
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int j;
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};
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void copy(struct A *a, struct A *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %{{.*}}, i8* align 4 %{{.*}}, i64 16, i1 false), !tbaa.struct [[TS:!.*]]
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struct B {
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char c1;
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struct A a;
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int ii;
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};
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void copy2(struct B *a, struct B *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %{{.*}}, i8* align 4 %{{.*}}, i64 24, i1 false), !tbaa.struct [[TS2:!.*]]
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typedef _Complex int T2;
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typedef _Complex char T5;
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typedef _Complex int T7;
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typedef struct T4 { T5 field0; T7 field1; } T4;
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typedef union T1 { T2 field0; T4 field1; } T1;
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void copy3 (T1 *a, T1 *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %{{.*}}, i8* align 4 %{{.*}}, i64 12, i1 false), !tbaa.struct [[TS3:!.*]]
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// Make sure that zero-length bitfield works.
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#define ATTR __attribute__ ((ms_struct))
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struct five {
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char a;
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int :0; /* ignored; prior field is not a bitfield. */
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char b;
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char c;
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} ATTR;
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void copy4(struct five *a, struct five *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* {{.*}}, i64 3, i1 false), !tbaa.struct [[TS4:!.*]]
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struct six {
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char a;
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int :0;
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char b;
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char c;
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};
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void copy5(struct six *a, struct six *b) {
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*a = *b;
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}
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* {{.*}}, i64 6, i1 false), !tbaa.struct [[TS5:!.*]]
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// CHECK: [[TS]] = !{i64 0, i64 2, !{{.*}}, i64 4, i64 4, !{{.*}}, i64 8, i64 1, !{{.*}}, i64 12, i64 4, !{{.*}}}
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// CHECK: [[CHAR:!.*]] = !{!"omnipotent char", !{{.*}}}
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// CHECK: [[TAG_INT:!.*]] = !{[[INT:!.*]], [[INT]], i64 0}
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// CHECK: [[INT]] = !{!"int", [[CHAR]]
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// CHECK: [[TAG_CHAR:!.*]] = !{[[CHAR]], [[CHAR]], i64 0}
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// (offset, size) = (0,1) char; (4,2) short; (8,4) int; (12,1) char; (16,4) int; (20,4) int
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// CHECK: [[TS2]] = !{i64 0, i64 1, !{{.*}}, i64 4, i64 2, !{{.*}}, i64 8, i64 4, !{{.*}}, i64 12, i64 1, !{{.*}}, i64 16, i64 4, {{.*}}, i64 20, i64 4, {{.*}}}
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// (offset, size) = (0,8) char; (0,2) char; (4,8) char
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// CHECK: [[TS3]] = !{i64 0, i64 8, !{{.*}}, i64 0, i64 2, !{{.*}}, i64 4, i64 8, !{{.*}}}
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// CHECK: [[TS4]] = !{i64 0, i64 1, [[TAG_CHAR]], i64 1, i64 4, [[TAG_INT]], i64 1, i64 1, [[TAG_CHAR]], i64 2, i64 1, [[TAG_CHAR]]}
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// CHECK: [[TS5]] = !{i64 0, i64 1, [[TAG_CHAR]], i64 4, i64 4, [[TAG_INT]], i64 4, i64 1, [[TAG_CHAR]], i64 5, i64 1, [[TAG_CHAR]]}
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