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r272261 - in /trunk/gcc: ChangeLog testsuite/Ch...


Author: law
Date: Thu Jun 13 18:55:55 2019
New Revision: 272261

URL: https://gcc.gnu.org/viewcvs?rev=272261&root=gcc&view=rev
Log:
	PR tree-optimization/77820
	* tree-ssa-threadedge.c
	(edge_forwards_cmp_to_conditional_jump_through_empty_bb_p): New
	function.
	(thread_across_edge): Add call to
	edge_forwards_cmp_to_conditional_jump_through_empty_bb_p.

	PR tree-optimization/77820
	* gcc.dg/tree-ssa/phi_on_compare-1.c: New testcase.
	* gcc.dg/tree-ssa/phi_on_compare-2.c: New testcase.
	* gcc.dg/tree-ssa/phi_on_compare-3.c: New testcase.
	* gcc.dg/tree-ssa/phi_on_compare-4.c: New testcase.
	* gcc.dg/tree-ssa/split-path-6.c: Update testcase.
	* gcc.target/sh/pr51244-20.c: Update testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/phi_on_compare-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/phi_on_compare-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/phi_on_compare-3.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/phi_on_compare-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/split-path-6.c
    trunk/gcc/testsuite/gcc.target/sh/pr51244-20.c
    trunk/gcc/tree-ssa-threadedge.c


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