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-rw-r--r--lib/Target/X86/X86InstrMMX.td16
1 files changed, 13 insertions, 3 deletions
diff --git a/lib/Target/X86/X86InstrMMX.td b/lib/Target/X86/X86InstrMMX.td
index 3bd9af5..fd70801 100644
--- a/lib/Target/X86/X86InstrMMX.td
+++ b/lib/Target/X86/X86InstrMMX.td
@@ -587,11 +587,21 @@ let AddedComplexity = 15 in {
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