[PATCH] R600: Fix selection failure on EXTLOAD
Matt Arsenault
Matthew.Arsenault at amd.com
Mon Oct 28 18:17:04 PDT 2013
http://llvm-reviews.chandlerc.com/D2044
Files:
lib/Target/R600/R600ISelLowering.cpp
test/CodeGen/R600/extload.ll
Index: lib/Target/R600/R600ISelLowering.cpp
===================================================================
--- lib/Target/R600/R600ISelLowering.cpp
+++ lib/Target/R600/R600ISelLowering.cpp
@@ -94,6 +94,8 @@
setLoadExtAction(ISD::SEXTLOAD, MVT::i16, Custom);
setLoadExtAction(ISD::ZEXTLOAD, MVT::i8, Custom);
setLoadExtAction(ISD::ZEXTLOAD, MVT::i16, Custom);
+ setLoadExtAction(ISD::EXTLOAD, MVT::i8, Custom);
+ setLoadExtAction(ISD::EXTLOAD, MVT::i16, Custom);
setOperationAction(ISD::STORE, MVT::i8, Custom);
setOperationAction(ISD::STORE, MVT::i32, Custom);
setOperationAction(ISD::STORE, MVT::v2i32, Custom);
Index: test/CodeGen/R600/extload.ll
===================================================================
--- /dev/null
+++ test/CodeGen/R600/extload.ll
@@ -0,0 +1,26 @@
+; RUN: llc -march=r600 -mcpu=cypress < %s | FileCheck -check-prefix=EG %s
+
+; EG-LABEL: @anyext_load_i8:
+; EG: AND_INT
+; EG-NEXT: 255
+define void @anyext_load_i8(i8 addrspace(1)* nocapture noalias %out, i8 addrspace(1)* nocapture noalias %src) nounwind {
+ %cast = bitcast i8 addrspace(1)* %src to i32 addrspace(1)*
+ %load = load i32 addrspace(1)* %cast, align 1
+ %x = bitcast i32 %load to <4 x i8>
+ %castOut = bitcast i8 addrspace(1)* %out to <4 x i8> addrspace(1)*
+ store <4 x i8> %x, <4 x i8> addrspace(1)* %castOut, align 1
+ ret void
+}
+
+; EG-LABEL: @anyext_load_i16:
+; EG: AND_INT
+; EG: LSHL
+; EG: 65535
+define void @anyext_load_i16(i16 addrspace(1)* nocapture noalias %out, i16 addrspace(1)* nocapture noalias %src) nounwind {
+ %cast = bitcast i16 addrspace(1)* %src to i32 addrspace(1)*
+ %load = load i32 addrspace(1)* %cast, align 1
+ %x = bitcast i32 %load to <2 x i16>
+ %castOut = bitcast i16 addrspace(1)* %out to <2 x i16> addrspace(1)*
+ store <2 x i16> %x, <2 x i16> addrspace(1)* %castOut, align 1
+ ret void
+}
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