From: Jeff Law Date: Tue, 28 Nov 2017 18:21:10 +0000 (-0700) Subject: * gimple-ssa-evrp-analyze.c X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5e4a80e8a80584741b1e5dd73b936b15862e9171;p=gcc.git * gimple-ssa-evrp-analyze.c (evrp_range_analyzer::record_ranges_from_phis): Only use SCEV to refine ranges if scev_initialized_p returns true. * vr-values.c (vr_values::extract_range_from_phi_node): Likewise. From-SVN: r255211 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ca674859292..cc548d7d7e3 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2017-11-28 Jeff Law + + * gimple-ssa-evrp-analyze.c + (evrp_range_analyzer::record_ranges_from_phis): Only use SCEV to + refine ranges if scev_initialized_p returns true. + * vr-values.c (vr_values::extract_range_from_phi_node): Likewise. + 2017-11-28 Julia Koval * config/i386/avx512vbmi2intrin.h (_mm512_shrdi_epi16, diff --git a/gcc/gimple-ssa-evrp-analyze.c b/gcc/gimple-ssa-evrp-analyze.c index 6f225cb7d0b..551b1d6b529 100644 --- a/gcc/gimple-ssa-evrp-analyze.c +++ b/gcc/gimple-ssa-evrp-analyze.c @@ -246,7 +246,8 @@ evrp_range_analyzer::record_ranges_from_phis (basic_block bb) to use VARYING for them. But we can still resort to SCEV for loop header PHIs. */ struct loop *l; - if (interesting + if (scev_initialized_p () + && interesting && (l = loop_containing_stmt (phi)) && l->header == gimple_bb (phi)) vr_values->adjust_range_with_scev (&vr_result, l, phi, lhs); diff --git a/gcc/vr-values.c b/gcc/vr-values.c index 0150f59d53d..9352e120d9d 100644 --- a/gcc/vr-values.c +++ b/gcc/vr-values.c @@ -2935,7 +2935,8 @@ scev_check: scev_check can be reached from two paths, one is a fall through from above "varying" label, the other is direct goto from code block which tries to avoid infinite simulation. */ - if ((l = loop_containing_stmt (phi)) + if (scev_initialized_p () + && (l = loop_containing_stmt (phi)) && l->header == gimple_bb (phi)) adjust_range_with_scev (vr_result, l, phi, lhs);