[cherry-pick][swift/release/6.0] [clang][PGO] Apply artificial DebugLoc to llvm.instrprof.increment instructions #8696
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…structions (llvm#90717) Prior to this change the debug-location for the `llvm.instrprof.increment` intrinsic was set to whatever the current DIBuilder's current debug location was set to. This meant that for switch-statements, a counter's location was set to the previous case's debug-location, causing confusing stepping behaviour in debuggers. This patch makes sure we attach a dummy debug-location for the increment instructions. rdar://123050737 (cherry picked from commit 4113e15)
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Michael137
changed the title
adrian-prantl
approved these changes
May 4, 2024
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Prior to this change the debug-location for the
llvm.instrprof.incrementintrinsic was set to whatever the currentDIBuilder's current debug location was set to. This meant that for
switch-statements, a counter's location was set to the previous case's
debug-location, causing confusing stepping behaviour in debuggers. This
patch makes sure we attach a dummy debug-location for the increment
instructions.
rdar://123050737
(cherry picked from commit 4113e15)