R600: Improve support for < 32-bit loads

Reviewed-by: Vincent Lejeune <vljn at ovi.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186921 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 18 insertions, 2 deletions

diff --git a/lib/Target/R600/AMDGPUInstructions.td b/lib/Target/R600/AMDGPUInstructions.td
index b3cbe99..04618f2 100644
--- a/lib/Target/R600/AMDGPUInstructions.td
+++ b/lib/Target/R600/AMDGPUInstructions.td
@@ -96,11 +96,19 @@ def az_extloadi8 : PatFrag<(ops node:$ptr), (az_extload node:$ptr), [{
   return cast<LoadSDNode>(N)->getMemoryVT() == MVT::i8;
 }]>;
 
-def az_extloadi8_global : PatFrag<(ops node:$ptr), (az_extloadi8 node:$ptr), [{
+def sextloadi8_global : PatFrag<(ops node:$ptr), (sextloadi8 node:$ptr), [{
     return isGlobalLoad(dyn_cast<LoadSDNode>(N));
 }]>;
 
 def az_extloadi8_constant : PatFrag<(ops node:$ptr), (az_extloadi8 node:$ptr), [{
+    return isConstantLoad(dyn_cast<LoadSDNode>(N), -1);
+}]>;
+
+def sextloadi8_constant : PatFrag<(ops node:$ptr), (sextloadi8 node:$ptr), [{
+    return isConstantLoad(dyn_cast<LoadSDNode>(N), -1);
+}]>;
+
+def az_extloadi8_global : PatFrag<(ops node:$ptr), (az_extloadi8 node:$ptr), [{
     return isGlobalLoad(dyn_cast<LoadSDNode>(N));
 }]>;
 
@@ -112,10 +120,18 @@ def az_extloadi16_global : PatFrag<(ops node:$ptr), (az_extloadi16 node:$ptr), [
     return isGlobalLoad(dyn_cast<LoadSDNode>(N));
 }]>;
 
-def az_extloadi16_constant : PatFrag<(ops node:$ptr), (az_extloadi16 node:$ptr), [{
+def sextloadi16_global : PatFrag<(ops node:$ptr), (sextloadi16 node:$ptr), [{
     return isGlobalLoad(dyn_cast<LoadSDNode>(N));
 }]>;
 
+def az_extloadi16_constant : PatFrag<(ops node:$ptr), (az_extloadi16 node:$ptr), [{
+    return isConstantLoad(dyn_cast<LoadSDNode>(N), -1);
+}]>;
+
+def sextloadi16_constant : PatFrag<(ops node:$ptr), (sextloadi16 node:$ptr), [{
+    return isConstantLoad(dyn_cast<LoadSDNode>(N), -1);
+}]>;
+
 def az_extloadi32 : PatFrag<(ops node:$ptr), (az_extload node:$ptr), [{
   return cast<LoadSDNode>(N)->getMemoryVT() == MVT::i32;
 }]>;