[PATCH] R600: Fix truncstore from i64 to i1

[Matt Arsenault]

http://llvm-reviews.chandlerc.com/D3047

Files:
  lib/Target/R600/AMDGPUISelLowering.cpp
  test/CodeGen/R600/trunc-store-i1.ll

Index: lib/Target/R600/AMDGPUISelLowering.cpp
===================================================================
--- lib/Target/R600/AMDGPUISelLowering.cpp
+++ lib/Target/R600/AMDGPUISelLowering.cpp
@@ -123,6 +123,11 @@
   setTruncStoreAction(MVT::v2i32, MVT::v2i1, Expand);
   setTruncStoreAction(MVT::v4i32, MVT::v4i1, Expand);
 
+  setTruncStoreAction(MVT::i64, MVT::i1, Expand);
+  setTruncStoreAction(MVT::v2i64, MVT::v2i1, Expand);
+  setTruncStoreAction(MVT::v4i64, MVT::v4i1, Expand);
+
+
   // XXX: This can be change to always be Custom, once the non-BFI path of
   // MergeVectorStores can handle 64-bit stores.
   setTruncStoreAction(MVT::v4i32, MVT::v4i16,
Index: test/CodeGen/R600/trunc-store-i1.ll
===================================================================
--- /dev/null
+++ test/CodeGen/R600/trunc-store-i1.ll
@@ -0,0 +1,30 @@
+; RUN: llc -march=r600 -mcpu=SI < %s | FileCheck -check-prefix=SI %s
+
+
+; SI-LABEL: @global_truncstore_i32_to_i1
+; SI: S_LOAD_DWORD [[LOAD:s[0-9]+]],
+; SI: V_AND_B32_e64 [[VREG:v[0-9]+]], 1, [[LOAD]], 0, 0, 0, 0
+; SI: BUFFER_STORE_BYTE [[VREG]],
+define void @global_truncstore_i32_to_i1(i1 addrspace(1)* %out, i32 %val) nounwind {
+  %trunc = trunc i32 %val to i1
+  store i1 %trunc, i1 addrspace(1)* %out, align 1
+  ret void
+}
+
+; SI-LABEL: @global_truncstore_i64_to_i1
+; SI: BUFFER_STORE_BYTE
+define void @global_truncstore_i64_to_i1(i1 addrspace(1)* %out, i64 %val) nounwind {
+  %trunc = trunc i64 %val to i1
+  store i1 %trunc, i1 addrspace(1)* %out, align 1
+  ret void
+}
+
+; SI-LABEL: @global_truncstore_i16_to_i1
+; SI: S_LOAD_DWORD [[LOAD:s[0-9]+]],
+; SI: V_AND_B32_e64 [[VREG:v[0-9]+]], 1, [[LOAD]], 0, 0, 0, 0
+; SI: BUFFER_STORE_BYTE [[VREG]],
+define void @global_truncstore_i16_to_i1(i1 addrspace(1)* %out, i16 %val) nounwind {
+  %trunc = trunc i16 %val to i1
+  store i1 %trunc, i1 addrspace(1)* %out, align 1
+  ret void
+}
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