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Enable -widen-vmovs by default.

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This will widen 32-bit register vmov instructions to 64-bit when
possible.  The 64-bit vmovd instructions can then be translated to NEON
vorr instructions by the execution dependency fix pass.

The copies are only widened if they are marked as clobbering the whole
D-register.

llvm-svn: 144734
This commit is contained in:
Jakob Stoklund Olesen 2011-11-15 23:53:18 +00:00
parent c9b63af4bb
commit 5ea426cfa8
1 changed files with 1 additions and 1 deletions
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2
lib/Target/ARM/ARMBaseInstrInfo.cpp
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@ -46,7 +46,7 @@ EnableARM3Addr("enable-arm-3-addr-conv", cl::Hidden,
cl::desc("Enable ARM 2-addr to 3-addr conv"));
static cl::opt<bool>
WidenVMOVS("widen-vmovs", cl::Hidden,
WidenVMOVS("widen-vmovs", cl::Hidden, cl::init(true),
cl::desc("Widen ARM vmovs to vmovd when possible"));
/// ARM_MLxEntry - Record information about MLA / MLS instructions.