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17e2633cd6
CodeGen assumed that a compound literal with array type should have a corresponding LLVM IR array type. We had two bugs in this area: - Zero sized arrays in compound literals would lead to the creation of an opaque type. This is unnecessary, we should just create an array type with a bound of zero. - Funny record types (like unions) lead to exotic IR types for compound literals. In this case, CodeGen must be prepared to deal with the possibility that it might not have an array IR type. This fixes PR21912. llvm-svn: 224219
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple armv7-none-eabi -emit-llvm -o - %s | FileCheck %s
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struct X {
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X();
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X(const X&);
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X(const char*);
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~X();
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};
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struct Y {
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int i;
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X x;
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};
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// CHECK-LABEL: define i32 @_Z1fv()
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int f() {
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// CHECK: [[LVALUE:%[a-z0-9.]+]] = alloca
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// CHECK-NEXT: [[I:%[a-z0-9]+]] = getelementptr inbounds {{.*}}* [[LVALUE]], i32 0, i32 0
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// CHECK-NEXT: store i32 17, i32* [[I]]
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// CHECK-NEXT: [[X:%[a-z0-9]+]] = getelementptr inbounds {{.*}} [[LVALUE]], i32 0, i32 1
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// CHECK-NEXT: call %struct.X* @_ZN1XC1EPKc({{.*}}[[X]]
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// CHECK-NEXT: [[I:%[a-z0-9]+]] = getelementptr inbounds {{.*}} [[LVALUE]], i32 0, i32 0
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// CHECK-NEXT: [[RESULT:%[a-z0-9]+]] = load i32*
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// CHECK-NEXT: call %struct.Y* @_ZN1YD1Ev
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// CHECK-NEXT: ret i32 [[RESULT]]
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return ((Y){17, "seventeen"}).i;
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}
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// CHECK-LABEL: define i32 @_Z1gv()
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int g() {
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// CHECK: store [2 x i32]* %{{[a-z0-9.]+}}, [2 x i32]** [[V:%[a-z0-9.]+]]
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const int (&v)[2] = (int [2]) {1,2};
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// CHECK: [[A:%[a-z0-9.]+]] = load [2 x i32]** [[V]]
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// CHECK-NEXT: [[A0ADDR:%[a-z0-9.]+]] = getelementptr inbounds [2 x i32]* [[A]], i32 0, {{.*}} 0
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// CHECK-NEXT: [[A0:%[a-z0-9.]+]] = load i32* [[A0ADDR]]
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// CHECK-NEXT: ret i32 [[A0]]
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return v[0];
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}
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struct Z { int i[3]; };
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int *p = (Z){ {1, 2, 3} }.i;
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// CHECK: define {{.*}}__cxx_global_var_init()
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// CHECK: store i32* getelementptr inbounds (%struct.Z* @.compoundliteral, i32 0, i32 0, i32 0), i32** @p
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int *PR21912_1 = (int []){};
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// CHECK-LABEL: define {{.*}}__cxx_global_var_init1()
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// CHECK: store i32* getelementptr inbounds ([0 x i32]* @.compoundliteral2, i32 0, i32 0), i32** @PR21912_1
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union PR21912Ty {
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long long l;
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double d;
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};
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union PR21912Ty *PR21912_2 = (union PR21912Ty[]){{.d = 2.0}, {.l = 3}};
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// CHECK-LABEL: define {{.*}}__cxx_global_var_init3()
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// CHECK: store %union.PR21912Ty* getelementptr inbounds ([2 x %union.PR21912Ty]* bitcast (<{ { double }, %union.PR21912Ty }>* @.compoundliteral4 to [2 x %union.PR21912Ty]*), i32 0, i32 0), %union.PR21912Ty** @PR21912_2
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