From c39a4ad7a8e2e494432980bdaff5d4b378b50bb2 Mon Sep 17 00:00:00 2001 From: Jan Hubicka Date: Thu, 16 Oct 2008 03:29:14 +0200 Subject: [PATCH] ira-emit.c (change_regs): Return false when replacing reg by itself. 2008-10-15 Jan Hubicka * ira-emit.c (change_regs): Return false when replacing reg by itself. From-SVN: r141163 --- gcc/ChangeLog | 5 +++++ gcc/ira-emit.c | 6 +++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ccdc92ed986..c3d2d9f1d45 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-10-15 Jan Hubicka + + * ira-emit.c (change_regs): Return false when replacing reg by + itself. + 2008-10-14 Vladimir Makarov PR target/37633 diff --git a/gcc/ira-emit.c b/gcc/ira-emit.c index 7fdaefb52e5..a6a7582f519 100644 --- a/gcc/ira-emit.c +++ b/gcc/ira-emit.c @@ -137,6 +137,7 @@ change_regs (rtx *loc) int i, regno, result = false; const char *fmt; enum rtx_code code; + rtx reg; if (*loc == NULL_RTX) return false; @@ -151,7 +152,10 @@ change_regs (rtx *loc) return false; if (ira_curr_regno_allocno_map[regno] == NULL) return false; - *loc = ALLOCNO_REG (ira_curr_regno_allocno_map[regno]); + reg = ALLOCNO_REG (ira_curr_regno_allocno_map[regno]); + if (reg == *loc) + return false; + *loc = reg; return true; }