[llvm-commits] [llvm] r49757 - in /llvm/trunk: lib/Target/X86/X86InstrMMX.td test/CodeGen/X86/mmx-bitcast-to-i64.ll

[Dan Gohman]

Author: djg
Date: Tue Apr 15 18:55:07 2008
New Revision: 49757

URL: http://llvm.org/viewvc/llvm-project?rev=49757&view=rev
Log:
Add movd instructions to move from MMX registers
to 64-bit GPR registers on x86-64.

Added:
    llvm/trunk/test/CodeGen/X86/mmx-bitcast-to-i64.ll
Modified:
    llvm/trunk/lib/Target/X86/X86InstrMMX.td

Modified: llvm/trunk/lib/Target/X86/X86InstrMMX.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrMMX.td?rev=49757&r1=49756&r2=49757&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrMMX.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrMMX.td Tue Apr 15 18:55:07 2008
@@ -167,6 +167,10 @@
                              "movd\t{$src, $dst|$dst, $src}", []>;
 
 let neverHasSideEffects = 1 in
+def MMX_MOVD64from64rr : MMXRI<0x6E, MRMSrcReg, (outs GR64:$dst), (ins VR64:$src),
+                               "movd\t{$src, $dst|$dst, $src}", []>;
+
+let neverHasSideEffects = 1 in
 def MMX_MOVQ64rr : MMXI<0x6F, MRMSrcReg, (outs VR64:$dst), (ins VR64:$src),
                         "movq\t{$src, $dst|$dst, $src}", []>;
 let isSimpleLoad = 1, isReMaterializable = 1, mayHaveSideEffects = 1 in
@@ -548,6 +552,14 @@
           (MMX_MOVD64to64rr GR64:$src)>;
 def : Pat<(v8i8  (bitconvert (i64 GR64:$src))),
           (MMX_MOVD64to64rr GR64:$src)>;
+def : Pat<(i64 (bitconvert (v1i64 VR64:$src))),
+          (MMX_MOVD64from64rr VR64:$src)>;
+def : Pat<(i64 (bitconvert (v2i32 VR64:$src))),
+          (MMX_MOVD64from64rr VR64:$src)>;
+def : Pat<(i64 (bitconvert (v4i16 VR64:$src))),
+          (MMX_MOVD64from64rr VR64:$src)>;
+def : Pat<(i64  (bitconvert (v8i8 VR64:$src))),
+          (MMX_MOVD64from64rr VR64:$src)>;
 
 // Move scalar to XMM zero-extended
 // movd to XMM register zero-extends

Added: llvm/trunk/test/CodeGen/X86/mmx-bitcast-to-i64.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/mmx-bitcast-to-i64.ll?rev=49757&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/mmx-bitcast-to-i64.ll (added)
+++ llvm/trunk/test/CodeGen/X86/mmx-bitcast-to-i64.ll Tue Apr 15 18:55:07 2008
@@ -0,0 +1,26 @@
+; RUN: llvm-as < %s | llc -march=x86-64 | grep movd | count 4
+
+define i64 @foo(<1 x i64>* %p) {
+  %t = load <1 x i64>* %p
+  %u = add <1 x i64> %t, %t
+  %s = bitcast <1 x i64> %u to i64
+  ret i64 %s
+}
+define i64 @goo(<2 x i32>* %p) {
+  %t = load <2 x i32>* %p
+  %u = add <2 x i32> %t, %t
+  %s = bitcast <2 x i32> %u to i64
+  ret i64 %s
+}
+define i64 @hoo(<4 x i16>* %p) {
+  %t = load <4 x i16>* %p
+  %u = add <4 x i16> %t, %t
+  %s = bitcast <4 x i16> %u to i64
+  ret i64 %s
+}
+define i64 @ioo(<8 x i8>* %p) {
+  %t = load <8 x i8>* %p
+  %u = add <8 x i8> %t, %t
+  %s = bitcast <8 x i8> %u to i64
+  ret i64 %s
+}