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DebugInfo: Rewrite atSameLineAs() as MDLocation::canDiscriminate()

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Rewrite `DILocation::atSameLineAs()` as `MDLocation::canDiscriminate()`
with a doxygen comment explaining its purpose.  I've added a few FIXMEs
where I think this check is too weak; fixing that is tracked by PR23199.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234674 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-04-11 01:00:47 +00:00
parent 43aeb128e1
commit 2c64a1129f
3 changed files with 19 additions and 5 deletions
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lib/Transforms/Utils/AddDiscriminators.cpp
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@@ -189,7 +189,7 @@ bool AddDiscriminators::runOnFunction(Function &F) {
// location as B's last instruction (Last), add a new
// discriminator for First's location and all the instructions
// in Succ that share the same location with First.
if (FirstDIL.atSameLineAs(LastDIL)) {
if (!FirstDIL->canDiscriminate(*LastDIL)) {
// Create a new lexical scope and compute a new discriminator
// number for it.
StringRef Filename = FirstDIL.getFilename();