From b34878a37be4bd942b0460be0e5f9b3c8cbe0b17 Mon Sep 17 00:00:00 2001 From: Jan Hubicka Date: Sun, 7 Jan 2001 14:45:33 +0100 Subject: [PATCH] * jump.c (comparison_dominates_p): Support unordered compares. From-SVN: r38776 --- gcc/ChangeLog | 4 ++++ gcc/jump.c | 22 +++++++++++++++++++--- 2 files changed, 23 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 14df3834582..2749261bebe 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +Sun Jan 7 14:44:19 MET 2001 Jan Hubicka + + * jump.c (comparison_dominates_p): Support unordered compares. + Sun Jan 7 14:39:07 MET 2001 Jan Hubicka * simplify-rtx.c (simplify_relational_operation): Always simplify diff --git a/gcc/jump.c b/gcc/jump.c index 032172d3907..2dae0e53333 100644 --- a/gcc/jump.c +++ b/gcc/jump.c @@ -2004,19 +2004,34 @@ comparison_dominates_p (code1, code2) switch (code1) { + case UNEQ: + if (code2 == UNLE || code2 == UNGE) + return 1; + break; + case EQ: if (code2 == LE || code2 == LEU || code2 == GE || code2 == GEU || code2 == ORDERED) return 1; break; + case UNLT: + if (code2 == UNLE || code2 == NE) + return 1; + break; + case LT: - if (code2 == LE || code2 == NE || code2 == ORDERED) + if (code2 == LE || code2 == NE || code2 == ORDERED || code2 == LTGT) + return 1; + break; + + case UNGT: + if (code2 == UNGE || code2 == NE) return 1; break; case GT: - if (code2 == GE || code2 == NE || code2 == ORDERED) + if (code2 == GE || code2 == NE || code2 == ORDERED || code2 == LTGT) return 1; break; @@ -2042,7 +2057,8 @@ comparison_dominates_p (code1, code2) break; case UNORDERED: - if (code2 == NE) + if (code2 == NE || code2 == UNEQ || code2 == UNLE || code2 == UNLT + || code2 == UNGE || code2 == UNGT) return 1; break; -- 2.30.2