From b35ed9247aadcca20e63d19404c50abb33f7d239 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 5 Nov 2008 06:04:51 +0000
Subject: [PATCH] Add more vector move low and zero-extend patterns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58752 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86InstrMMX.td  |  9 +++++++++
 test/CodeGen/X86/mmx-vzmovl.ll | 15 +++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 test/CodeGen/X86/mmx-vzmovl.ll

diff --git a/lib/Target/X86/X86InstrMMX.td b/lib/Target/X86/X86InstrMMX.td
index bf0dcd20e25..f412f843455 100644
--- a/lib/Target/X86/X86InstrMMX.td
+++ b/lib/Target/X86/X86InstrMMX.td
@@ -585,6 +585,15 @@ let AddedComplexity = 15 in {
            (MMX_MOVZDI2PDIrr GR32:$src)>; 
 }
 
+let AddedComplexity = 20 in {
+  def : Pat<(v8i8 (X86vzmovl (bc_v8i8 (load_mmx addr:$src)))),
+           (MMX_MOVZDI2PDIrm addr:$src)>; 
+  def : Pat<(v4i16 (X86vzmovl (bc_v4i16 (load_mmx addr:$src)))),
+           (MMX_MOVZDI2PDIrm addr:$src)>; 
+  def : Pat<(v2i32 (X86vzmovl (bc_v2i32 (load_mmx addr:$src)))),
+           (MMX_MOVZDI2PDIrm addr:$src)>; 
+}
+
 // Scalar to v4i16 / v8i8. The source may be a GR32, but only the lower
 // 8 or 16-bits matter.
 def : Pat<(bc_v8i8  (v2i32 (scalar_to_vector GR32:$src))),
diff --git a/test/CodeGen/X86/mmx-vzmovl.ll b/test/CodeGen/X86/mmx-vzmovl.ll
new file mode 100644
index 00000000000..95f95794531
--- /dev/null
+++ b/test/CodeGen/X86/mmx-vzmovl.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep movd
+; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep movq
+
+define void @foo(<1 x i64>* %a, <1 x i64>* %b) nounwind {
+entry:
+	%0 = load <1 x i64>* %a, align 8		; <<1 x i64>> [#uses=1]
+	%1 = bitcast <1 x i64> %0 to <2 x i32>		; <<2 x i32>> [#uses=1]
+	%2 = and <2 x i32> %1, < i32 -1, i32 0 >		; <<2 x i32>> [#uses=1]
+	%3 = bitcast <2 x i32> %2 to <1 x i64>		; <<1 x i64>> [#uses=1]
+	store <1 x i64> %3, <1 x i64>* %b, align 8
+	br label %bb2
+
+bb2:		; preds = %entry
+	ret void
+}