OCHyams 84a71d5259 [DebugInfo] Fix line number attribution in mldst-motion ...

Taking the example from the test included in this patch:

$ cat test.cpp -n
     1	void fun(int *a, int cond) {
     2	  if (cond)
     3	    a[1] = 1;
     4	  else
     5	    a[1] = 2;
     6	}

mldst-motion will merge and sink the stores in if.then and if.else into
if.end. The resultant PHI, gep and store should be attributed line zero
with the innermost common scope rather than picking a debug location from
one of the original stores.

Reviewed By: djtodoro

Differential Revision: https://reviews.llvm.org/D132741

2022-08-30 10:03:53 +01:00

16 KiB

Raw Blame History

View Raw