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2006 Jul 31
0
[LLVMdev] Auto-vectorization in GCC 4.0
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2006 Jul 31
2
[LLVMdev] Auto-vectorization in GCC 4.0
Hi,
I am trying to turn on the new GCC auto-vectorization feature within
llvmgcc4. Below is the command I used, but nothing was vectorized. Does it
mean that llvmgcc4 has disabled this optimization and all I can do is to
embed SSE intrinsics in the source code by hand?
Thanks!
./llvm-gcc4-x86/bin/llvm-gcc -c -O2 -ftree-vectorize -msse
-ftree-vectorizer-verbose=5 -emit-llvm vec.c -o vec.bc