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cris: Correct output templates in define_subst patterns.

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Whoops.  This little gem had the effect of making the output
operand (0) constraints disappear but not the input operand (1)
constraints for define_subst:ed patterns, probably because
there's another (match_dup 1) in the output template (not
investigated).

That went surprisingly unnoticed until I added a pass leaning
just a little bit harder on the define_subst:ed patterns and
then only by the libgfortran library generating assembly with
nominally incorrect syntax.  (There was a move to a special
register from a general register, and it incorrectly matched a
pattern affecting condition codes.)

gcc:
	* config/cris/cris.md ("setnz_subst", "setnz_subst", "setcc_subst"):
	Use match_dup in output template, not match_operand.
This commit is contained in:
Hans-Peter Nilsson 2020-07-12 21:58:58 +02:00
parent 79fcdd2dd9
commit f4ac1a7fee
1 changed files with 3 additions and 3 deletions
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6
gcc/config/cris/cris.md
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@ -275,7 +275,7 @@
"reload_completed"
[(set (reg:CC_NZ CRIS_CC0_REGNUM)
(compare:CC_NZ (match_dup 1) (const_int 0)))
(set (match_operand 0) (match_operand 1))])
(set (match_dup 0) (match_dup 1))])
(define_subst_attr "setnzvc" "setnzvc_subst" "" "_setnzvc")
(define_subst_attr "ccnzvc" "setnzvc_subst" "" "_enabled")
@ -288,7 +288,7 @@
"reload_completed"
[(set (reg:CC_NZVC CRIS_CC0_REGNUM)
(compare:CC_NZVC (match_dup 1) (const_int 0)))
(set (match_operand 0) (match_operand 1))])
(set (match_dup 0) (match_dup 1))])
(define_subst_attr "setcc" "setcc_subst" "" "_setcc")
(define_subst_attr "cccc" "setcc_subst" "" "_enabled")
@ -301,7 +301,7 @@
"reload_completed"
[(set (reg:CC CRIS_CC0_REGNUM)
(compare:CC (match_dup 1) (const_int 0)))
(set (match_operand 0) (match_operand 1))])
(set (match_dup 0) (match_dup 1))])
;; Operand and operator predicates.