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re PR target/42671 (Thumb2 generate more instructions than Thumb1 to load GOT address)

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PR target/42671
        * config/arm/arm.c (arm_load_pic_register): Use the same code
        sequence with Thumb2 as for Thumb1.
        * config/arm/arm.md (pic_add_dot_plus_four): Enable this pattern
        for all Thumb varieties.

From-SVN: r156276
This commit is contained in:
Wei Guozhi 2010-01-27 09:19:36 +00:00 committed by Nick Clifton
parent b4b04ed67d
commit 336e24cffc
3 changed files with 12 additions and 5 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2010-01-27 Wei Guozhi <carrot@google.com>
PR target/42671
* config/arm/arm.c (arm_load_pic_register): Use the same code
sequence with Thumb2 as for Thumb1.
* config/arm/arm.md (pic_add_dot_plus_four): Enable this pattern
for all Thumb varieties.
2010-01-26 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* config/sparc/sparc.c (sparc_elf_asm_named_section): Test for

5
gcc/config/arm/arm.c
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@ -1,6 +1,6 @@
/* Output routines for GCC for ARM.
Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Pieter `Tiggr' Schoenmakers (rcpieter@win.tue.nl)
and Martin Simmons (@harleqn.co.uk).
@ -5150,8 +5150,7 @@ arm_load_pic_register (unsigned long saved_regs ATTRIBUTE_UNUSED)
}
emit_insn (gen_pic_load_addr_thumb2 (pic_reg, pic_rtx));
emit_insn (gen_pic_load_dot_plus_four (pic_tmp, labelno));
emit_insn (gen_addsi3 (pic_reg, pic_reg, pic_tmp));
emit_insn (gen_pic_add_dot_plus_four (pic_reg, pic_reg, labelno));
}
else /* TARGET_THUMB1 */
{

4
gcc/config/arm/arm.md
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@ -1,6 +1,6 @@
;;- Machine description for ARM for GNU compiler
;; Copyright 1991, 1993, 1994, 1995, 1996, 1996, 1997, 1998, 1999, 2000,
;; 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
;; 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
;; Free Software Foundation, Inc.
;; Contributed by Pieter `Tiggr' Schoenmakers (rcpieter@win.tue.nl)
;; and Martin Simmons (@harleqn.co.uk).
@ -5267,7 +5267,7 @@
(const_int 4)
(match_operand 2 "" "")]
UNSPEC_PIC_BASE))]
"TARGET_THUMB1"
"TARGET_THUMB"
"*
(*targetm.asm_out.internal_label) (asm_out_file, \"LPIC\",
INTVAL (operands[2]));