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clang/test/CodeGen/attr-maybeundef-template.cpp

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// RUN: %clang_cc1 -no-opaque-pointers -emit-llvm %s -o - | FileCheck %s
// CHECK-LABEL: @_Z5test4IfEvT_(
aaron.ballmanUnsubmitted
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This mangling works for Itanium targets, but doesn't match MSVC targets, which is why the test is failing on Windows.

aaron.ballman: This mangling works for Itanium targets, but doesn't match MSVC targets, which is why the test…
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP2:%.*]] = alloca float, align 4
// CHECK-NEXT: store float [[TMP1:%.*]], float* [[TMP2:%.*]], align 4
// CHECK-NEXT: ret void
// CHECK-LABEL: @_Z5test4IiEvT_(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP2:%.*]] = alloca i32, align 4
// CHECK-NEXT: store i32 [[TMP1:%.*]], i32* [[TMP2:%.*]], align 4
// CHECK-NEXT: ret void
// CHECK-LABEL: @_Z4testv(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP1:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[TMP2:%.*]] = alloca float, align 4
// CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP1:%.*]], align 4
// CHECK-NEXT: [[TMP4:%.*]] = freeze i32 [[TMP3:%.*]]
// CHECK-NEXT: call void @_Z5test4IiEvT_(i32 noundef [[TMP4:%.*]])
// CHECK-NEXT: [[TMP5:%.*]] = load float, float* [[TMP2:%.*]], align 4
// CHECK-NEXT: [[TMP6:%.*]] = freeze float [[TMP5:%.*]]
// CHECK-NEXT: call void @_Z5test4IfEvT_(float noundef [[TMP6:%.*]])
// CHECK-NEXT: ret void
template<class T>
void test4(T __attribute__((maybe_undef)) arg) {
return;
}
template
void test4<float>(float arg);
template
void test4<int>(int arg);
void test() {
int Var1;
float Var2;
test4<int>(Var1);
test4<float>(Var2);
}