From de7c79cc7771f311aa451103162436077aa1699a Mon Sep 17 00:00:00 2001 From: Eric Christopher Date: Thu, 24 Jun 2004 19:15:43 +0000 Subject: [PATCH] combine.c (distribute_notes): Don't delete sets to global register variables. 2004-06-24 Eric Christopher * combine.c (distribute_notes): Don't delete sets to global register variables. From-SVN: r83606 --- gcc/ChangeLog | 5 +++++ gcc/combine.c | 6 ++++-- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 7799244f09c..a08ab3f5d6a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-06-24 Eric Christopher + + * combine.c (distribute_notes): Don't delete sets to + global register variables. + 2004-06-24 Jakub Jelinek * config/i386/i386.md (ffsdi2, clzdi2): New expanders. diff --git a/gcc/combine.c b/gcc/combine.c index c0fef9d7f38..008e351ca1a 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -11821,8 +11821,10 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2) /* If the register is being set at TEM, see if that is all TEM is doing. If so, delete TEM. Otherwise, make this - into a REG_UNUSED note instead. */ - if (reg_set_p (XEXP (note, 0), PATTERN (tem))) + into a REG_UNUSED note instead. Don't delete sets to + global register vars. */ + if (reg_set_p (XEXP (note, 0), PATTERN (tem)) + && !global_regs [REGNO(XEXP (note, 0))]) { rtx set = single_set (tem); rtx inner_dest = 0; -- 2.30.2