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Commit aec0ee11 authored by Bin Cheng's avatar Bin Cheng Committed by Bin Cheng
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re PR tree-optimization/78574 (ice on valid C code at -O2 and -O3 in both 32-... 

re PR tree-optimization/78574 (ice on valid C code at -O2 and -O3 in both 32- and 64-bit modes on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1)))

	PR tree-optimization/78574
	* tree-ssa-loop-ivopts.c (find_deriving_biv_for_expr): Skip loop
	header PHI that doesn't define biv.
	gcc/testsuite
	PR tree-optimization/78574
	* gcc.c-torture/compile/pr78574.c: New test.

From-SVN: r243026
parent 44cd68d2
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