aaron/ispc
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AVX updates / improvements.

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Add optimization patterns to detect and simplify masked loads and stores
  with the mask all on / all off.
Enable AVX for LLVM 3.0 builds (still generally hits bugs / unimplemented
  stuff on the LLVM side, but it's getting there).
This commit is contained in:
Matt Pharr
2011-07-25 07:41:37 +01:00
parent 0932dcd98b
commit 16be1d313e
2 changed files with 92 additions and 6 deletions
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8
main.cpp
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@@ -91,7 +91,11 @@ static void usage(int ret) {
printf(" disable-gather-scatter-flattening\tDisable flattening when all lanes are on\n");
printf(" disable-uniform-memory-optimizations\tDisable uniform-based coherent memory access\n");
printf(" disable-masked-store-optimizations\tDisable lowering to regular stores when possible\n");
#if defined(LLVM_3_0) || defined(LLVM_3_0svn)
printf(" [--target={sse2,sse4,sse4x2,avx}] Select target ISA (SSE4 is default unless compiling for atom; then SSE2 is.)\n");
#else
printf(" [--target={sse2,sse4,sse4x2}] Select target ISA (SSE4 is default unless compiling for atom; then SSE2 is.)\n");
#endif // LLVM 3.0
printf(" [--version]\t\t\t\tPrint ispc version\n");
printf(" [--woff]\t\t\t\tDisable warnings\n");
printf(" [--wno-perf]\t\t\tDon't issue warnings related to performance-related issues\n");
@@ -118,13 +122,13 @@ static void lDoTarget(const char *target) {
g->target.nativeVectorWidth = 4;
g->target.vectorWidth = 8;
}
#if 0
#if defined(LLVM_3_0) || defined(LLVM_3_0svn)
else if (!strcasecmp(target, "avx")) {
g->target.isa = Target::AVX;
g->target.nativeVectorWidth = 8;
g->target.vectorWidth = 8;
}
#endif
#endif // LLVM 3.0
else
usage(1);
}