[llvm-commits] [llvm] r60499 - in /llvm/trunk: lib/Target/X86/X86InstrMMX.td test/CodeGen/X86/mmx-vzmovl-2.ll
Evan Cheng
evan.cheng at apple.com
Wed Dec 3 11:38:06 PST 2008
Author: evancheng
Date: Wed Dec 3 13:38:05 2008
New Revision: 60499
URL: http://llvm.org/viewvc/llvm-project?rev=60499&view=rev
Log:
Use mmx (punpckldq VR64, (mmx_v_set0)) to clear high 32-bits of a VR64 register.
Added:
llvm/trunk/test/CodeGen/X86/mmx-vzmovl-2.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=60499&r1=60498&r2=60499&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrMMX.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrMMX.td Wed Dec 3 13:38:05 2008
@@ -587,11 +587,21 @@
let AddedComplexity = 20 in {
def : Pat<(v8i8 (X86vzmovl (bc_v8i8 (load_mmx addr:$src)))),
- (MMX_MOVZDI2PDIrm addr:$src)>;
+ (MMX_MOVZDI2PDIrm addr:$src)>;
def : Pat<(v4i16 (X86vzmovl (bc_v4i16 (load_mmx addr:$src)))),
- (MMX_MOVZDI2PDIrm addr:$src)>;
+ (MMX_MOVZDI2PDIrm addr:$src)>;
def : Pat<(v2i32 (X86vzmovl (bc_v2i32 (load_mmx addr:$src)))),
- (MMX_MOVZDI2PDIrm addr:$src)>;
+ (MMX_MOVZDI2PDIrm addr:$src)>;
+}
+
+// Clear top half.
+let AddedComplexity = 15 in {
+ def : Pat<(v8i8 (X86vzmovl VR64:$src)),
+ (MMX_PUNPCKLDQrr VR64:$src, (MMX_V_SET0))>;
+ def : Pat<(v4i16 (X86vzmovl VR64:$src)),
+ (MMX_PUNPCKLDQrr VR64:$src, (MMX_V_SET0))>;
+ def : Pat<(v2i32 (X86vzmovl VR64:$src)),
+ (MMX_PUNPCKLDQrr VR64:$src, (MMX_V_SET0))>;
}
// Scalar to v4i16 / v8i8. The source may be a GR32, but only the lower
Added: llvm/trunk/test/CodeGen/X86/mmx-vzmovl-2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/mmx-vzmovl-2.ll?rev=60499&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/mmx-vzmovl-2.ll (added)
+++ llvm/trunk/test/CodeGen/X86/mmx-vzmovl-2.ll Wed Dec 3 13:38:05 2008
@@ -0,0 +1,24 @@
+; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep pxor
+; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep punpckldq
+
+ %struct.vS1024 = type { [8 x <4 x i32>] }
+ %struct.vS512 = type { [4 x <4 x i32>] }
+
+declare <1 x i64> @llvm.x86.mmx.psrli.q(<1 x i64>, i32) nounwind readnone
+
+define void @t() nounwind {
+entry:
+ br label %bb554
+
+bb554: ; preds = %bb554, %entry
+ %sum.0.reg2mem.0 = phi <1 x i64> [ %tmp562, %bb554 ], [ zeroinitializer, %entry ] ; <<1 x i64>> [#uses=1]
+ %0 = load <1 x i64>* null, align 8 ; <<1 x i64>> [#uses=2]
+ %1 = bitcast <1 x i64> %0 to <2 x i32> ; <<2 x i32>> [#uses=1]
+ %tmp555 = and <2 x i32> %1, < i32 -1, i32 0 > ; <<2 x i32>> [#uses=1]
+ %2 = bitcast <2 x i32> %tmp555 to <1 x i64> ; <<1 x i64>> [#uses=1]
+ %3 = call <1 x i64> @llvm.x86.mmx.psrli.q(<1 x i64> %0, i32 32) nounwind readnone ; <<1 x i64>> [#uses=1]
+ %tmp558 = add <1 x i64> %sum.0.reg2mem.0, %2 ; <<1 x i64>> [#uses=1]
+ %4 = call <1 x i64> @llvm.x86.mmx.psrli.q(<1 x i64> %tmp558, i32 32) nounwind readnone ; <<1 x i64>> [#uses=1]
+ %tmp562 = add <1 x i64> %4, %3 ; <<1 x i64>> [#uses=1]
+ br label %bb554
+}
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