From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Fri, 31 Jul 2015 04:12:04 +0000 (+0000)
Subject: AMDGPU: Fix v16i32 to v16i8 truncstore
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=30eac4b85aaf36958b6ba8eb191f9b8c7a811de4

AMDGPU: Fix v16i32 to v16i8 truncstore

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243731 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/AMDGPU/SIISelLowering.cpp b/lib/Target/AMDGPU/SIISelLowering.cpp
index 099b0b15942..25798c42a8c 100644
--- a/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -157,6 +157,7 @@ SITargetLowering::SITargetLowering(TargetMachine &TM,
 
   setTruncStoreAction(MVT::i64, MVT::i32, Expand);
   setTruncStoreAction(MVT::v8i32, MVT::v8i16, Expand);
+  setTruncStoreAction(MVT::v16i32, MVT::v16i8, Expand);
   setTruncStoreAction(MVT::v16i32, MVT::v16i16, Expand);
 
   setOperationAction(ISD::LOAD, MVT::i1, Custom);
diff --git a/test/CodeGen/AMDGPU/trunc-store.ll b/test/CodeGen/AMDGPU/trunc-store.ll
new file mode 100644
index 00000000000..4ba815f2669
--- /dev/null
+++ b/test/CodeGen/AMDGPU/trunc-store.ll
@@ -0,0 +1,48 @@
+; RUN: llc -march=amdgcn -mcpu=verde -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+
+; FUNC-LABEL: {{^}}truncstore_arg_v16i32_to_v16i8:
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+define void @truncstore_arg_v16i32_to_v16i8(<16 x i8> addrspace(1)* %out, <16 x i32> %in) {
+  %trunc = trunc <16 x i32> %in to <16 x i8>
+  store <16 x i8> %trunc, <16 x i8> addrspace(1)* %out
+  ret void
+}
+
+; FUNC-LABEL: {{^}}truncstore_arg_v16i64_to_v16i8:
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+; SI: buffer_store_byte
+define void @truncstore_arg_v16i64_to_v16i8(<16 x i8> addrspace(1)* %out, <16 x i64> %in) {
+  %trunc = trunc <16 x i64> %in to <16 x i8>
+  store <16 x i8> %trunc, <16 x i8> addrspace(1)* %out
+  ret void
+}