derek.holloway
7502bf64a4
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92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
// RUN: %clang_cc1 %s -triple x86_64-apple-macosx10.7.2 -emit-llvm -o - | FileCheck %s
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struct X { int x[6]; };
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struct Y { char x[13]; struct X y; } __attribute((packed));
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struct Y g;
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void f(struct X);
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struct X foo(void);
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struct X test1(void) {
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// CHECK: @test1
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// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr {{.*}}, ptr align 1 getelementptr inbounds nuw (i8, ptr @g, i64 13), i64 24, i1 false)
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return g.y;
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}
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struct X test2(void) {
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// CHECK: @test2
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// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr {{.*}}, ptr align 1 getelementptr inbounds nuw (i8, ptr @g, i64 13), i64 24, i1 false)
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struct X a = g.y;
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return a;
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}
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void test3(struct X a) {
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// CHECK: @test3
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// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 1 getelementptr inbounds nuw (i8, ptr @g, i64 13), ptr {{.*}}, i64 24, i1 false)
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g.y = a;
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}
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void test4(void) {
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// CHECK: @test4
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// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr {{.*}}, ptr align 1 getelementptr inbounds nuw (i8, ptr @g, i64 13), i64 24, i1 false)
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f(g.y);
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}
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// PR12395
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int test5(void) {
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// CHECK: @test5
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// CHECK: load i32, ptr getelementptr inbounds nuw (i8, ptr @g, i64 13), align 1
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return g.y.x[0];
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}
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void test6(void) {
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// CHECK: @test6
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// CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 1 getelementptr inbounds nuw (i8, ptr @g, i64 13), ptr align 4 %{{.*}}, i64 24, i1 false)
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g.y = foo();
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}
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struct XBitfield {
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unsigned b1 : 10;
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unsigned b2 : 12;
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unsigned b3 : 10;
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};
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struct YBitfield {
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char x;
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struct XBitfield y;
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} __attribute((packed));
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struct YBitfield gbitfield;
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unsigned test7(void) {
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// CHECK: @test7
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// CHECK: load i32, ptr getelementptr inbounds nuw (i8, ptr @gbitfield, i64 1), align 1
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return gbitfield.y.b2;
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}
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void test8(unsigned x) {
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// CHECK: @test8
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// CHECK: load i32, ptr getelementptr inbounds nuw (i8, ptr @gbitfield, i64 1), align 1
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// CHECK: store i32 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @gbitfield, i64 1), align 1
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gbitfield.y.b2 = x;
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}
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struct TBitfield
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{
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long a;
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char b;
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unsigned c:15;
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};
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struct TBitfield tbitfield;
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unsigned test9(void) {
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// CHECK: @test9
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// CHECK: load i16, ptr getelementptr inbounds nuw (i8, ptr @tbitfield, i64 9), align 1
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return tbitfield.c;
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}
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void test10(unsigned x) {
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// CHECK: @test10
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// CHECK: load i16, ptr getelementptr inbounds nuw (i8, ptr @tbitfield, i64 9), align 1
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// CHECK: store i16 {{.*}}, ptr getelementptr inbounds nuw (i8, ptr @tbitfield, i64 9), align 1
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tbitfield.c = x;
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}
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