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Generate FMA instructions with AVX2 (when possible).

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Issue #320.
This commit is contained in:
Matt Pharr
2012-08-03 10:43:41 -07:00
parent e6aec96e05
commit 19d8f2e258
3 changed files with 22 additions and 2 deletions
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3
main.cpp
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@@ -115,6 +115,7 @@ usage(int ret) {
printf(" [-O0/-O1]\t\t\t\tSet optimization level (-O1 is default)\n");
printf(" [--opt=<option>]\t\t\tSet optimization option\n");
printf(" disable-assertions\t\tRemove assertion statements from final code.\n");
printf(" disable-fma\t\t\tDisable 'fused multiply-add' instructions (on targets that support them)\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");
@@ -333,6 +334,8 @@ int main(int Argc, char *Argv[]) {
g->opt.disableAsserts = true;
else if (!strcmp(opt, "disable-loop-unroll"))
g->opt.unrollLoops = false;
else if (!strcmp(opt, "disable-fma"))
g->opt.disableFMA = true;
// These are only used for performance tests of specific
// optimizations