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* rtlanal.c (reg_set_p): Add check for regs_invalidated_by_call.

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From-SVN: r84930
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Roger Sayle 2004-07-19 20:24:59 +00:00 committed by Roger Sayle
parent fab6228541
commit 4f1605d2ca
2 changed files with 7 additions and 7 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2004-07-19 Roger Sayle <roger@eyesopen.com>
* rtlanal.c (reg_set_p): Add check for regs_invalidated_by_call.
2004-07-19 Jeff Law <law@redhat.com>
* tree-ssa-dom.c (single_incoming_edge_ignoring_loop_edges): New.

10
gcc/rtlanal.c
View File

@ -941,14 +941,10 @@ reg_set_p (rtx reg, rtx insn)
if (INSN_P (insn)
&& (FIND_REG_INC_NOTE (insn, reg)
|| (CALL_P (insn)
/* We'd like to test call_used_regs here, but rtlanal.c can't
reference that variable due to its use in genattrtab. So
we'll just be more conservative.
??? Unless we could ensure that the CALL_INSN_FUNCTION_USAGE
information holds all clobbered registers. */
&& ((REG_P (reg)
&& REGNO (reg) < FIRST_PSEUDO_REGISTER)
&& REGNO (reg) < FIRST_PSEUDO_REGISTER
&& TEST_HARD_REG_BIT (regs_invalidated_by_call,
REGNO (reg)))
|| MEM_P (reg)
|| find_reg_fusage (insn, CLOBBER, reg)))))
return 1;