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riscv-gcc-1
Commit d8ddc751 by Richard Kenner
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Remove bad peepholes that improperly use dead_or_set_p. 

From-SVN: r9491
parent b095754a
Showing with 0 additions and 30 deletions
gcc/config/pyr/pyr.md
......@@ -1136,36 +1136,6 @@
return \"mtstw %1,%0\";
")
;; Same for HI and QI mode move-test as well.
(define_peephole
[(set (match_operand:HI 0 "register_operand" "=r")
(match_operand:HI 1 "nonimmediate_operand" "rm"))
(set (match_operand:SI 2 "register_operand" "=r")
(sign_extend:SI (match_operand:HI 3 "nonimmediate_operand" "rm")))
(set (cc0) (match_dup 2))]
"dead_or_set_p (insn, operands[2])
&& (rtx_equal_p (operands[3], operands[0])
|| rtx_equal_p (operands[3], operands[1]))"
"*
cc_status.flags |= CC_NO_OVERFLOW;
return \"cvthw %1,%0\";
")
(define_peephole
[(set (match_operand:QI 0 "register_operand" "=r")
(match_operand:QI 1 "nonimmediate_operand" "rm"))
(set (match_operand:SI 2 "register_operand" "=r")
(sign_extend:SI (match_operand:QI 3 "nonimmediate_operand" "rm")))
(set (cc0) (match_dup 2))]
"dead_or_set_p (insn, operands[2])
&& (rtx_equal_p (operands[3], operands[0])
|| rtx_equal_p (operands[3], operands[1]))"
"*
cc_status.flags |= CC_NO_OVERFLOW;
return \"cvtbw %1,%0\";
")
;; Optimize loops with an incremented/decremented variable.
(define_peephole
......
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