[PATCH] Match new shuffle codegen for MOVHPD patterns (PR21791)
Tom Stellard
thomas.stellard at amd.com
Thu Dec 11 01:25:56 PST 2014
REPOSITORY
rL LLVM
================
Comment at: llvm/trunk/lib/Target/X86/X86InstrSSE.td:1381-1385
@@ -1371,2 +1380,7 @@
(MOVHPDrm VR128:$src1, addr:$src2)>;
+
+ def : Pat<(store (f64 (vector_extract
+ (v2f64 (X86Shufp VR128:$src, VR128:$src, (i8 1))),
+ (iPTR 0))), addr:$dst),
+ (MOVHPDmr addr:$dst, VR128:$src)>;
}
----------------
The types on the output pattern aren't needed any more, so you can do:
(MOVHPDmr $dst, $src)
Also, you can use types instead of register class on the input patterns.
http://reviews.llvm.org/D6586
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