From cc86e4a7d2f109518456dc3f656dbf34c1aec02c Mon Sep 17 00:00:00 2001
From: Matt Pharr <matt.pharr@intel.com>
Date: Mon, 13 Feb 2012 16:52:01 -0800
Subject: [PATCH] Disable coalescing optimizations when using generic target.

The main issue is that they end up generating a number of smaller
vector ops (e.g. 4-wide and 8-wide on the 16-wide generic target,
which the examples/intrinsics implementations don't currently
support.

This fixes a number of failing tests for now; it may be worth
generalizing the stuff in examples/intrinsics at some point,
since as a general principle, e.g. if generating LLVM IR output,
the coalescing optimizations are still desirable.

Issue #175.
---
 opt.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/opt.cpp b/opt.cpp
index ac0b9c53..e8a49c1f 100644
--- a/opt.cpp
+++ b/opt.cpp
@@ -392,7 +392,8 @@ Optimize(llvm::Module *module, int optLevel) {
             g->target.vectorWidth > 1) {
             optPM.add(CreateGSToLoadStorePass());
         
-            if (g->opt.disableCoalescing == false) {
+            if (g->opt.disableCoalescing == false &&
+                g->target.isa != Target::GENERIC) {
                 // It is important to run this here to make it easier to
                 // finding matching gathers we can coalesce..
                 optPM.add(llvm::createEarlyCSEPass());