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Age	Commit message (Collapse)	Author	Files	Lines
2020-12-08	if-to-switch: fix matching of negative conditions	Martin Liska	1	-0/+6
	gcc/ChangeLog: PR tree-optimization/98182 * gimple-if-to-switch.cc (pass_if_to_switch::execute): Request chain linkage through false edges only. gcc/testsuite/ChangeLog: PR tree-optimization/98182 * gcc.dg/tree-ssa/if-to-switch-10.c: New test. * gcc.dg/tree-ssa/pr98182.c: New test.
2020-12-02	if-to-switch: Support chain with 2 BBs.	Martin Liska	1	-2/+4
	As seen in the test-case, even 2 BBs can handle interesting cases covered by a jump table or a bit-test. gcc/ChangeLog: PR tree-optimization/88702 * gimple-if-to-switch.cc (pass_if_to_switch::execute): Require at least 2 BBs. * gimple-if-to-switch.cc (find_conditions): Require equal precision for low and high of a range. gcc/testsuite/ChangeLog: PR tree-optimization/88702 * gcc.dg/tree-ssa/if-to-switch-9.c: New test.
2020-12-02	if-to-switch: consider only integral types	Martin Liska	1	-0/+1
	gcc/ChangeLog: PR tree-optimization/98084 * gimple-if-to-switch.cc (find_conditions): Consider only integral types. gcc/testsuite/ChangeLog: PR tree-optimization/98084 * gcc.dg/tree-ssa/pr98084.c: New test.
2020-12-01	Add if-chain to switch conversion pass.	Martin Liska	1	-0/+566
	gcc/ChangeLog: PR tree-optimization/14799 PR ipa/88702 * Makefile.in: Add gimple-if-to-switch.o. * dbgcnt.def (DEBUG_COUNTER): Add new debug counter. * passes.def: Include new pass_if_to_switch pass. * timevar.def (TV_TREE_IF_TO_SWITCH): New timevar. * tree-pass.h (make_pass_if_to_switch): New. * tree-ssa-reassoc.c (struct operand_entry): Move to the header. (dump_range_entry): Move to header file. (debug_range_entry): Likewise. (no_side_effect_bb): Make it global. * tree-switch-conversion.h (simple_cluster::simple_cluster): Add inline for couple of functions in order to prevent error about multiple defined symbols. * gimple-if-to-switch.cc: New file. * tree-ssa-reassoc.h: New file. gcc/testsuite/ChangeLog: PR tree-optimization/14799 PR ipa/88702 * gcc.dg/tree-ssa/pr96480.c: Disable if-to-switch conversion. * gcc.dg/tree-ssa/reassoc-32.c: Likewise. * g++.dg/tree-ssa/if-to-switch-1.C: New test. * gcc.dg/tree-ssa/if-to-switch-1.c: New test. * gcc.dg/tree-ssa/if-to-switch-2.c: New test. * gcc.dg/tree-ssa/if-to-switch-3.c: New test. * gcc.dg/tree-ssa/if-to-switch-4.c: New test. * gcc.dg/tree-ssa/if-to-switch-5.c: New test. * gcc.dg/tree-ssa/if-to-switch-6.c: New test. * gcc.dg/tree-ssa/if-to-switch-7.c: New test. * gcc.dg/tree-ssa/if-to-switch-8.c: New test.