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| author | Julian Brown <julian@codesourcery.com> | 2012-07-10 13:15:26 +0000 |
|---|---|---|
| committer | Alexander Monakov <amonakov@gcc.gnu.org> | 2012-07-10 17:15:26 +0400 |
| commit | 2f01137541c6214e5b4bca9fd0257a234bf20bf3 (patch) | |
| tree | ef13393dd500299e54e1f86a52a0cf3083845fc8 /gcc/config/arm | |
| parent | 175aed004525c485193d7fed4991a4588846fd79 (diff) | |
| download | gcc-2f01137541c6214e5b4bca9fd0257a234bf20bf3.zip gcc-2f01137541c6214e5b4bca9fd0257a234bf20bf3.tar.gz gcc-2f01137541c6214e5b4bca9fd0257a234bf20bf3.tar.bz2 | |
arm.md (movsi): Don't split symbol refs here.
2012-07-10 Julian Brown <julian@codesourcery.com>
* config/arm/arm.md (movsi): Don't split symbol refs here.
(define_split): New.
From-SVN: r189411
Diffstat (limited to 'gcc/config/arm')
| -rw-r--r-- | gcc/config/arm/arm.md | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md index db404e7..8888382 100644 --- a/gcc/config/arm/arm.md +++ b/gcc/config/arm/arm.md @@ -5475,14 +5475,6 @@ optimize && can_create_pseudo_p ()); DONE; } - - if (TARGET_USE_MOVT && !target_word_relocations - && GET_CODE (operands[1]) == SYMBOL_REF - && !flag_pic && !arm_tls_referenced_p (operands[1])) - { - arm_emit_movpair (operands[0], operands[1]); - DONE; - } } else /* TARGET_THUMB1... */ { @@ -5591,6 +5583,24 @@ " ) +;; Split symbol_refs at the later stage (after cprop), instead of generating +;; movt/movw pair directly at expand. Otherwise corresponding high_sum +;; and lo_sum would be merged back into memory load at cprop. However, +;; if the default is to prefer movt/movw rather than a load from the constant +;; pool, the performance is better. +(define_split + [(set (match_operand:SI 0 "arm_general_register_operand" "") + (match_operand:SI 1 "general_operand" ""))] + "TARGET_32BIT + && TARGET_USE_MOVT && GET_CODE (operands[1]) == SYMBOL_REF + && !flag_pic && !target_word_relocations + && !arm_tls_referenced_p (operands[1])" + [(clobber (const_int 0))] +{ + arm_emit_movpair (operands[0], operands[1]); + DONE; +}) + (define_insn "*thumb1_movsi_insn" [(set (match_operand:SI 0 "nonimmediate_operand" "=l,l,l,l,l,>,l, m,*l*h*k") (match_operand:SI 1 "general_operand" "l, I,J,K,>,l,mi,l,*l*h*k"))] |