bc72a3ab94
Currently ConstantExpr::getWithOperands does not handle FNeg and subsequently treats FNeg as binary operator, leading to an assertion failure or segmentation fault if built without assertions. Originally I reproduced this with llvm-dis on a bitcode file, which I unfortunately cannot share and also cannot really reduce. But PR45426 describes the same issue and has a reproducer with Clang, so I'll go with that. Reviewed By: aprantl Differential Revision: https://reviews.llvm.org/D86274
21 lines
696 B
C
21 lines
696 B
C
// RUN: %clang_cc1 -emit-llvm-bc -disable-llvm-passes -o %t.bc %s
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// RUN: llvm-dis %t.bc -o - | FileCheck %s
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// Test case for PR45426. Make sure we do not crash while writing bitcode
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// containing a simplify-able fneg constant expression. Check that the created
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// bitcode file can be disassembled and has the constant expressions simplified.
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//
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// CHECK-LABEL define i32 @main()
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// CHECK: entry:
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// CHECK-NEXT: %retval = alloca i32
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// CHECK-NEXT: store i32 0, i32* %retval
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// CHECK-NEXT: [[LV:%.*]] = load float*, float** @c
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// CHECK-NEXT: store float 1.000000e+00, float* [[LV]], align 4
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// CHECK-NEXT: ret i32 -1
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int a[], b;
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float *c;
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int main() {
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return -(*c = &b != a);
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}
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