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Unroll loops by default, add --opt=disable-loop-unroll to disable.

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Issue #78.
This commit is contained in:
Matt Pharr
2011-09-13 15:36:34 -07:00
parent 0c344b6755
commit 30f9dcd4f5
5 changed files with 33 additions and 11 deletions
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31
main.cpp
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@@ -73,8 +73,6 @@ static void usage(int ret) {
printf(" [--emit-asm]\t\t\tGenerate assembly language file as output\n");
printf(" [--emit-llvm]\t\t\tEmit LLVM bitode file as output\n");
printf(" [--emit-obj]\t\t\tGenerate object file file as output (default)\n");
printf(" [--fast-math]\t\t\tPerform non-IEEE-compliant optimizations of numeric expressions\n");
printf(" [--fast-masked-vload]\t\tFaster masked vector loads on SSE (may go past end of array)\n");
printf(" [-g]\t\t\t\tGenerate debugging information\n");
printf(" [--help]\t\t\t\tPrint help\n");
printf(" [-h <name>/--header-outfile=<name>]\tOutput filename for header\n");
@@ -88,8 +86,11 @@ static void usage(int ret) {
printf(" [--nocpp]\t\t\t\tDon't run the C preprocessor\n");
printf(" [-o <name>/--outfile=<name>]\tOutput filename (may be \"-\" for standard output)\n");
printf(" [-O0/-O1]\t\t\t\tSet optimization level (-O1 is default)\n");
#if 0
printf(" [--opt=<option>]\t\t\tSet optimization option\n");
printf(" disable-loop-unroll\t\tDisable loop unrolling.\n");
printf(" fast-masked-vload\t\tFaster masked vector loads on SSE (may go past end of array)\n");
printf(" fast-math\t\t\tPerform non-IEEE-compliant optimizations of numeric expressions\n");
#if 0
printf(" disable-blended-masked-stores\t\tScalarize masked stores on SSE (vs. using vblendps)\n");
printf(" disable-coherent-control-flow\t\tDisable coherent control flow optimizations\n");
printf(" disable-uniform-control-flow\t\tDisable uniform control flow optimizations\n");
@@ -198,10 +199,15 @@ int main(int Argc, char *Argv[]) {
arch = argv[i] + 7;
else if (!strncmp(argv[i], "--cpu=", 6))
cpu = argv[i] + 6;
else if (!strcmp(argv[i], "--fast-math"))
g->opt.fastMath = true;
else if (!strcmp(argv[i], "--fast-masked-vload"))
g->opt.fastMaskedVload = true;
else if (!strcmp(argv[i], "--fast-math")) {
fprintf(stderr, "--fast-math option has been renamed to --opt=fast-math!\n");
usage(1);
}
else if (!strcmp(argv[i], "--fast-masked-vload")) {
fprintf(stderr, "--fast-masked-vload option has been renamed to "
"--opt=fast-masked-vload!\n");
usage(1);
}
else if (!strcmp(argv[i], "--debug"))
g->debugPrint = true;
else if (!strcmp(argv[i], "--instrument"))
@@ -238,7 +244,16 @@ int main(int Argc, char *Argv[]) {
}
else if (!strncmp(argv[i], "--opt=", 6)) {
const char *opt = argv[i] + 6;
if (!strcmp(opt, "disable-blended-masked-stores"))
if (!strcmp(opt, "fast-math"))
g->opt.fastMath = true;
else if (!strcmp(opt, "fast-masked-vload"))
g->opt.fastMaskedVload = true;
else if (!strcmp(opt, "disable-loop-unroll"))
g->opt.unrollLoops = false;
// These are only used for performance tests of specific
// optimizations
else if (!strcmp(opt, "disable-blended-masked-stores"))
g->opt.disableBlendedMaskedStores = true;
else if (!strcmp(opt, "disable-coherent-control-flow"))
g->opt.disableCoherentControlFlow = true;