Rewrite llvm.flt.rounds to "1" for now, and disallow llvm.flt.rounds.

Until there is an intrinsic to *set* the rounding mode,
this intrinsic to *get* the rounding mode isn't so useful.
Separately we will add a test that for each platform, the
initial rounding mode is "1" (round to nearest).  That is
the case right now for x86, ARM, and MIPS.
(see https://codereview.chromium.org/16785003/)

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3491
R=mseaborn@chromium.org

Review URL: https://codereview.chromium.org/17229007

1 files changed, 1 insertions, 0 deletions

diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 866597ec72..804382fca7 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -624,6 +624,7 @@ int main(int argc, char **argv) {
   initializeReplacePtrsWithIntsPass(Registry);
   initializeResolveAliasesPass(Registry);
   initializeResolvePNaClIntrinsicsPass(Registry);
+  initializeRewriteLLVMIntrinsicsPass(Registry);
   initializeRewritePNaClLibraryCallsPass(Registry);
   initializeStripAttributesPass(Registry);
   initializeStripMetadataPass(Registry);