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Hi! On Tue, 15 Apr 2014 11:26:29 +0200 (CEST), Richard Biener <rguenther@suse.de> wrote: > This removes RTL loop unswitching > 2014-04-15 Richard Biener <rguenther@suse.de> > > * Makefile.in (OBJS): Remove loop-unswitch.o. > * loop-unswitch.c: Delete. > * tree-pass.h (make_pass_rtl_unswitch): Remove. > * passes.def (pass_rtl_unswitch): Likewise. > * loop-init.c (gate_rtl_unswitch): Likewise. > (rtl_unswitch): Likewise. > (pass_data_rtl_unswitch): Likewise. > (pass_rtl_unswitch): Likewise. > (make_pass_rtl_unswitch): Likewise. > * rtl.h (reversed_condition): Likewise. > (compare_and_jump_seq): Likewise. > * loop-iv.c (reversed_condition): Move here from loop-unswitch.c > and make static. > * loop-unroll.c (compare_and_jump_seq): Likewise. I found some more; OK to commit? Is a non-bootstrap build enough for this, or is a full bootstrap build and test needed? commit 8a703b1e7adc6001f665a12f93601382e3eea806 Author: Thomas Schwinge <thomas@codesourcery.com> Date: Wed May 7 13:01:47 2014 +0200 More gcc/loop-unswitch.c cleanup. gcc/ * cfgloop.h (unswitch_loops): Remove. * doc/passes.texi: Remove references to loop-unswitch.c * timevar.def (TV_LOOP_UNSWITCH): Remove. diff --git gcc/cfgloop.h gcc/cfgloop.h index ab8b809..62a656a 100644 --- gcc/cfgloop.h +++ gcc/cfgloop.h @@ -711,8 +711,6 @@ extern void loop_optimizer_init (unsigned); extern void loop_optimizer_finalize (void); /* Optimization passes. */ -extern void unswitch_loops (void); - enum { UAP_PEEL = 1, /* Enables loop peeling. */ diff --git gcc/doc/passes.texi gcc/doc/passes.texi index 2727b2c..fb064db 100644 --- gcc/doc/passes.texi +++ gcc/doc/passes.texi @@ -474,10 +474,7 @@ merging and induction variable elimination. The pass is implemented in Loop unswitching. This pass moves the conditional jumps that are invariant out of the loops. To achieve this, a duplicate of the loop is created for each possible outcome of conditional jump(s). The pass is implemented in -@file{tree-ssa-loop-unswitch.c}. This pass should eventually replace the -RTL level loop unswitching in @file{loop-unswitch.c}, but currently -the RTL level pass is not completely redundant yet due to deficiencies -in tree level alias analysis. +@file{tree-ssa-loop-unswitch.c}. The optimizations also use various utility functions contained in @file{tree-ssa-loop-manip.c}, @file{cfgloop.c}, @file{cfgloopanal.c} and @@ -793,8 +790,8 @@ The source files @file{cfgloopanal.c} and @file{cfgloopmanip.c} contain generic loop analysis and manipulation code. Initialization and finalization of loop structures is handled by @file{loop-init.c}. A loop invariant motion pass is implemented in @file{loop-invariant.c}. -Basic block level optimizations---unrolling, peeling and unswitching loops--- -are implemented in @file{loop-unswitch.c} and @file{loop-unroll.c}. +Basic block level optimizations---unrolling, and peeling loops--- +are implemented in @file{loop-unroll.c}. Replacing of the exit condition of loops by special machine-dependent instructions is handled by @file{loop-doloop.c}. diff --git gcc/timevar.def gcc/timevar.def index 9faf98b..2db1943 100644 --- gcc/timevar.def +++ gcc/timevar.def @@ -207,7 +207,6 @@ DEFTIMEVAR (TV_DSE2 , "dead store elim2") DEFTIMEVAR (TV_LOOP , "loop analysis") DEFTIMEVAR (TV_LOOP_INIT , "loop init") DEFTIMEVAR (TV_LOOP_MOVE_INVARIANTS , "loop invariant motion") -DEFTIMEVAR (TV_LOOP_UNSWITCH , "loop unswitching") DEFTIMEVAR (TV_LOOP_UNROLL , "loop unrolling") DEFTIMEVAR (TV_LOOP_DOLOOP , "loop doloop") DEFTIMEVAR (TV_LOOP_FINI , "loop fini") GrÃÃe, Thomas
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