https://llvm.org/bugs/show_bug.cgi?id=25577
Bug ID: 25577
Summary: following r253240, clang does not finish compiling
this example
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: yaron.ke...@gmail.com
CC: llvm-bugs@lists.llvm.org, resis...@mac.com,
tzafri...@gmail.com
Classification: Unclassified
http://llvm.org/viewvc/llvm-project?view=revision&revision=253240
Compile this code:
float __attribute__((__vector_size__(8))) add(float
__attribute__((__vector_size__(8))));
float __attribute__((__vector_size__(8))) mul();
void foo() {
float __attribute__((__vector_size__(8))) v1 = mul();
add(-v1 - v1);
}
with:
clang -c -O2 -ffast-math n1fv_7.c
r253239 finishes OK
r253240 does not finish
The sample was reduced from the fftw source file dft/simd/sse2/n1fv_7.c.
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