http://llvm.org/bugs/show_bug.cgi?id=15333
Bug ID: 15333
Summary: Cannot select: intrinsic %llvm.spu.si.sf
Product: clang
Version: 3.2
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: LLVM Codegen
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
It seems, the following code cannot be compiled:
void main() {
int N = 100;
double f[N];
}
> clang -std=c99 -c test.c -o test.a
fatal error: error in backend: Cannot select: intrinsic %llvm.spu.si.sf
changing N to `const int` will make the program work. This makes sense.
I don't know what the C99 Standard says on this, but if using a non-const is
not valid, at least the error message should be more "legible".
For comparison: `gcc -std=c99 -Wall test.c` does not complain at all if N is
non-const and produces a working binary.
More information can be found on StackOverflow:
http://stackoverflow.com/questions/15023592/llvm-cannot-select-intrinsic-llvm-spu-si-sf
My Clang version:
Ubuntu clang version 3.2-1~exp5ubuntu2 (tags/RELEASE_32/final) (based on LLVM
3.2)
Target: x86_64-pc-linux-gnu
Thread model: posix
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