65 lines
2 KiB
C
65 lines
2 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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// <rdar://problem/10463337>
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struct X test1() {
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// CHECK: @test1
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* bitcast (%struct.X* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1) to i8*), i64 24, i32 1, i1 false)
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return g.y;
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}
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struct X test2() {
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// CHECK: @test2
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* bitcast (%struct.X* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1) to i8*), i64 24, i32 1, 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.p0i8.p0i8.i64(i8* bitcast (%struct.X* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1) to i8*), i8* {{.*}}, i64 24, i32 1, i1 false)
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g.y = a;
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}
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// <rdar://problem/10530444>
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void test4() {
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// CHECK: @test4
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* bitcast (%struct.X* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1) to i8*), i64 24, i32 1, i1 false)
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f(g.y);
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}
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// PR12395
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int test5() {
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// CHECK: @test5
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// CHECK: load i32* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1, i32 0, i64 0), align 1
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return g.y.x[0];
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}
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// <rdar://problem/11220251>
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void test6() {
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// CHECK: @test6
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* bitcast (%struct.X* getelementptr inbounds (%struct.Y* @g, i32 0, i32 1) to i8*), i8* %{{.*}}, i64 24, i32 1, 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() {
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// CHECK: @test7
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// CHECK: load i32* bitcast (%struct.XBitfield* getelementptr inbounds (%struct.YBitfield* @gbitfield, i32 0, i32 1) to i32*), align 4
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return gbitfield.y.b2;
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}
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