2fd180bbb9
SelectionDAG will promote illegal types up to a power of 2 before splitting down to a legal type. This will create an IntegerType with a bit width that must be <= MAX_INT_BITS. This places an effective upper limit on any type of 2^23 so that we don't try create a 2^24 type. I considered putting a fatal error somewhere in the path from TargetLowering::getTypeConversion down to IntegerType::get, but limiting the type in IR seemed better. This breaks backwards compatibility with IR that is using a really large type. I suspect such IR is going to be very rare due to the the compile time costs such a type likely incurs. Prevents the ICE in PR51829. Reviewed By: efriedma, aaron.ballman Differential Revision: https://reviews.llvm.org/D109721
61 lines
2.5 KiB
C
61 lines
2.5 KiB
C
// RUN: %clang_cc1 -triple x86_64-gnu-linux -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK64
|
|
// RUN: %clang_cc1 -triple x86_64-windows-pc -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,CHECK64
|
|
// RUN: %clang_cc1 -triple i386-gnu-linux -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,LIN32
|
|
// RUN: %clang_cc1 -triple i386-windows-pc -O3 -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefixes=CHECK,WIN32
|
|
|
|
void GenericTest(_ExtInt(3) a, unsigned _ExtInt(3) b, _ExtInt(4) c) {
|
|
// CHECK: define {{.*}}void @GenericTest
|
|
int which = _Generic(a, _ExtInt(3): 1, unsigned _ExtInt(3) : 2, _ExtInt(4) : 3);
|
|
// CHECK: store i32 1
|
|
int which2 = _Generic(b, _ExtInt(3): 1, unsigned _ExtInt(3) : 2, _ExtInt(4) : 3);
|
|
// CHECK: store i32 2
|
|
int which3 = _Generic(c, _ExtInt(3): 1, unsigned _ExtInt(3) : 2, _ExtInt(4) : 3);
|
|
// CHECK: store i32 3
|
|
}
|
|
|
|
void VLATest(_ExtInt(3) A, _ExtInt(99) B, _ExtInt(123456) C) {
|
|
// CHECK: define {{.*}}void @VLATest
|
|
int AR1[A];
|
|
// CHECK: %[[A:.+]] = zext i3 %{{.+}} to i[[INDXSIZE:[0-9]+]]
|
|
// CHECK: %[[VLA1:.+]] = alloca i32, i[[INDXSIZE]] %[[A]]
|
|
int AR2[B];
|
|
// CHECK: %[[B:.+]] = trunc i99 %{{.+}} to i[[INDXSIZE]]
|
|
// CHECK: %[[VLA2:.+]] = alloca i32, i[[INDXSIZE]] %[[B]]
|
|
int AR3[C];
|
|
// CHECK: %[[C:.+]] = trunc i123456 %{{.+}} to i[[INDXSIZE]]
|
|
// CHECK: %[[VLA3:.+]] = alloca i32, i[[INDXSIZE]] %[[C]]
|
|
}
|
|
|
|
struct S {
|
|
_ExtInt(17) A;
|
|
_ExtInt(8388600) B;
|
|
_ExtInt(17) C;
|
|
};
|
|
|
|
void OffsetOfTest() {
|
|
// CHECK: define {{.*}}void @OffsetOfTest
|
|
int A = __builtin_offsetof(struct S,A);
|
|
// CHECK: store i32 0, i32* %{{.+}}
|
|
int B = __builtin_offsetof(struct S,B);
|
|
// CHECK64: store i32 8, i32* %{{.+}}
|
|
// LIN32: store i32 4, i32* %{{.+}}
|
|
// WINCHECK32: store i32 8, i32* %{{.+}}
|
|
int C = __builtin_offsetof(struct S,C);
|
|
// CHECK64: store i32 1048584, i32* %{{.+}}
|
|
// LIN32: store i32 1048580, i32* %{{.+}}
|
|
// WIN32: store i32 1048584, i32* %{{.+}}
|
|
}
|
|
|
|
void Size1ExtIntParam(unsigned _ExtInt(1) A) {
|
|
// CHECK: define {{.*}}void @Size1ExtIntParam(i1{{.*}} %[[PARAM:.+]])
|
|
// CHECK: %[[PARAM_ADDR:.+]] = alloca i1
|
|
// CHECK: %[[B:.+]] = alloca [5 x i1]
|
|
// CHECK: store i1 %[[PARAM]], i1* %[[PARAM_ADDR]]
|
|
unsigned _ExtInt(1) B[5];
|
|
|
|
// CHECK: %[[PARAM_LOAD:.+]] = load i1, i1* %[[PARAM_ADDR]]
|
|
// CHECK: %[[IDX:.+]] = getelementptr inbounds [5 x i1], [5 x i1]* %[[B]]
|
|
// CHECK: store i1 %[[PARAM_LOAD]], i1* %[[IDX]]
|
|
B[2] = A;
|
|
}
|