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[X86] Make sure load is non-volatile in the MMX_X86movdq2q (loadv2i64) isel pattern.
author
Craig Topper
<craig.topper@intel.com>
Thu, 15 Aug 2019 06:46:26 +0000
(06:46 +0000)
committer
Craig Topper
<craig.topper@intel.com>
Thu, 15 Aug 2019 06:46:26 +0000
(06:46 +0000)
This pattern will narrow the load so we should make sure its not
volatile.
llvm-svn: 368971
llvm/lib/Target/X86/X86InstrMMX.td
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diff --git
a/llvm/lib/Target/X86/X86InstrMMX.td
b/llvm/lib/Target/X86/X86InstrMMX.td
index
93e1cbd
..
82cad92
100644
(file)
--- a/
llvm/lib/Target/X86/X86InstrMMX.td
+++ b/
llvm/lib/Target/X86/X86InstrMMX.td
@@
-574,7
+574,7
@@
def MMX_X86movdq2q : SDNode<"X86ISD::MOVDQ2Q", SDTypeProfile<1, 1,
def : Pat<(x86mmx (MMX_X86movdq2q VR128:$src)),
(x86mmx (MMX_MOVDQ2Qrr VR128:$src))>;
-def : Pat<(x86mmx (MMX_X86movdq2q (
loadv2i64 addr:$src
))),
+def : Pat<(x86mmx (MMX_X86movdq2q (
v2i64 (nonvolatile_load addr:$src)
))),
(x86mmx (MMX_MOVQ64rm addr:$src))>;
// Misc.