AMDGPU: Don't legalize i16 extloads to i32 with legal i16
Keeping non-i16 extloads makes it easier to match some new
gfx9 load instructions.
llvm-svn: 312699
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
index f42600c..48faee9 100644
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -4430,6 +4430,9 @@
EVT MemVT = Load->getMemoryVT();
if (ExtType == ISD::NON_EXTLOAD && MemVT.getSizeInBits() < 32) {
+ if (MemVT == MVT::i16 && isTypeLegal(MVT::i16))
+ return SDValue();
+
// FIXME: Copied from PPC
// First, load into 32 bits, then truncate to 1 bit.