From 54cb4e20069f00f96ad2b6249cb68295a61a1786 Mon Sep 17 00:00:00 2001 From: Tom de Vries Date: Fri, 4 Aug 2017 07:27:05 +0000 Subject: [PATCH] Add missing edge probability in simd_clone_adjust Currently we generate an if with probability set on only one of the two edges: [0.00%] [count: INV]: _5 = mask.3[iter.6_3]; if (_5 == 0) goto ; [INV] [count: INV] else goto ; [100.00%] [count: INV] Add the missing edge probability, and set the split to unlikely/likely: if (_5 == 0) goto ; [19.99%] [count: INV] else goto ; [80.01%] [count: INV] 2017-08-04 Tom de Vries * omp-simd-clone.c (simd_clone_adjust): Add missing edge probability. From-SVN: r250865 --- gcc/ChangeLog | 4 ++++ gcc/omp-simd-clone.c | 7 +++++-- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ea78f4f4642..92143020844 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2017-08-04 Tom de Vries + + * omp-simd-clone.c (simd_clone_adjust): Add missing edge probability. + 2017-08-03 Bill Schmidt * config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): diff --git a/gcc/omp-simd-clone.c b/gcc/omp-simd-clone.c index a1a563e8094..fbb122cd1e0 100644 --- a/gcc/omp-simd-clone.c +++ b/gcc/omp-simd-clone.c @@ -1240,8 +1240,11 @@ simd_clone_adjust (struct cgraph_node *node) g = gimple_build_cond (EQ_EXPR, mask, build_zero_cst (TREE_TYPE (mask)), NULL, NULL); gsi_insert_after (&gsi, g, GSI_CONTINUE_LINKING); - make_edge (loop->header, incr_bb, EDGE_TRUE_VALUE); - FALLTHRU_EDGE (loop->header)->flags = EDGE_FALSE_VALUE; + edge e = make_edge (loop->header, incr_bb, EDGE_TRUE_VALUE); + e->probability = profile_probability::unlikely ().guessed (); + edge fallthru = FALLTHRU_EDGE (loop->header); + fallthru->flags = EDGE_FALSE_VALUE; + fallthru->probability = profile_probability::likely ().guessed (); } basic_block latch_bb = NULL; -- 2.30.2