Bob Wilson acfc01dedf Fix SROA to avoid unnecessary scalar conversions for 1-element vectors.
When a 1-element vector alloca is promoted, a store instruction can often be
rewritten without converting the value to a scalar and using an insertelement
instruction to stuff it into the new alloca.  This patch just adds a check
to skip that conversion when it is unnecessary.  This turns out to be really
important for some ARM Neon operations where <1 x i64> is used to get around
the fact that i64 is not a legal type.

llvm-svn: 184870
2013-06-25 19:09:50 +00:00
2013-06-24 03:22:51 +00:00
2013-06-25 18:58:11 +00:00
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llvm with tablegen backend for capstone disassembler
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