From d440ca8d597141afa64c02748d6172e7fa7483e6 Mon Sep 17 00:00:00 2001 From: Jeffrey A Law Date: Tue, 13 Jul 1999 17:03:22 +0000 Subject: [PATCH] cse.c (cse_insn): Don't put hard register source into tables for the last insn of a libcall. Wed Jun 16 20:29:00 1999 J"orn Rennecke * cse.c (cse_insn): Don't put hard register source into tables for the last insn of a libcall. Bring over from mainline sources. Fixes various sparc lapack problems. From-SVN: r28088 --- gcc/ChangeLog | 4 ++++ gcc/cse.c | 7 ++++++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3d6f6f19a0f6..1b2618ef8271 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ Tue Jul 13 10:44:14 1999 Jeffrey A Law (law@cygnus.com) + Wed Jun 16 20:29:00 1999 J"orn Rennecke + * cse.c (cse_insn): Don't put hard register source into tables for + the last insn of a libcall. + * rs6000.c (find_addr_reg): Do not select r0 as an address register. diff --git a/gcc/cse.c b/gcc/cse.c index 5fc6c7889a24..605d18507539 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -7607,7 +7607,12 @@ cse_insn (insn, libcall_insn) enum machine_mode mode = GET_MODE (src) == VOIDmode ? GET_MODE (dest) : GET_MODE (src); - if (sets[i].src_elt == 0) + /* Don't put a hard register source into the table if this is + the last insn of a libcall. */ + if (sets[i].src_elt == 0 + && (GET_CODE (src) != REG + || REGNO (src) >= FIRST_PSEUDO_REGISTER + || ! find_reg_note (insn, REG_RETVAL, NULL_RTX))) { register struct table_elt *elt; -- 2.47.2