Keith Walker 64915fd385 Add @llvm.dbg.value entries for the phi node created by -mem2reg ... When phi nodes are created in the -mem2reg phase, the @llvm.dbg.declare entries are converted to @llvm.dbg.value entries at the place where the store instructions existed. However no entry is created to describe the resulting value of the phi node. The effect of this is especially noticeable in for loops which have a constant for the intial value; the loop control variable's location would be described as the intial constant value in the loop body once the -mem2reg optimization phase was run. This change adds the creation of the @llvm.dbg.value entries to describe variables whose location is the result of a phi node created in -mem2reg. Also when the phi node is finally lowered to a machine instruction it is important that the lowered "load" instruction is placed before the associated DEBUG_VALUE entry describing the value loaded. Differential Revision: https://reviews.llvm.org/D23715 llvm-svn: 281895		2016-09-19 09:49:30 +00:00
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llvm	Add @llvm.dbg.value entries for the phi node created by -mem2reg	2016-09-19 09:49:30 +00:00
llvm-c	[EarlyCSE] Change C API pass interface for EarlyCSE w/ MemorySSA	2016-09-01 15:07:46 +00:00