Vedant Kumar
616fdb00df
[GVN] Partially revert debug info salvage change (r325063) ...
In r325063, we salvaged debug values from dying instructions in
GVN::processBlock() and GVN::performScalarPRE().
The change in performScalarPRE(), while correct, is unhelpful. It
introduced a call to salvageDebugInfo() which was immediately followed
by a RAUW, meaning it prevented the RAUW from efficiently updating
dbg.value intrinsics. This commit reverts the mistake and tightens up
the affected test case.
llvm-svn: 325308
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