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| author | Richard Henderson <rth@redhat.com> | 2002-11-25 16:51:17 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-11-25 16:51:17 -0800 |
| commit | 83bbd9b6c01f1a7a9c954783e58f760b1c2dca95 (patch) | |
| tree | 5273c65ecf336e7685b5c2a99498d88d7013166b | |
| parent | cc5baa8634e8ba28b64ff1a6619e461453e4a72d (diff) | |
| download | gcc-83bbd9b6c01f1a7a9c954783e58f760b1c2dca95.zip gcc-83bbd9b6c01f1a7a9c954783e58f760b1c2dca95.tar.gz gcc-83bbd9b6c01f1a7a9c954783e58f760b1c2dca95.tar.bz2 | |
alias.c (find_base_value): Use new_reg_base_value if it's live.
* alias.c (find_base_value): Use new_reg_base_value if it's live.
(copying_arguments): Make boolean.
From-SVN: r59483
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/alias.c | 19 |
2 files changed, 18 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 04a4f7a..bcb5208 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-11-25 Richard Henderson <rth@redhat.com> + + * alias.c (find_base_value): Use new_reg_base_value if it's live. + (copying_arguments): Make boolean. + 2002-11-25 Jason Thorpe <thorpej@wasabisystems.com> * gcc.c (static_spec_functions): Add if-exists-else spec diff --git a/gcc/alias.c b/gcc/alias.c index ca560b69..45e868c 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -199,7 +199,7 @@ char *reg_known_equiv_p; /* True when scanning insns from the start of the rtl to the NOTE_INSN_FUNCTION_BEG note. */ -static int copying_arguments; +static bool copying_arguments; /* The splay-tree used to store the various alias set entries. */ static splay_tree alias_sets; @@ -781,9 +781,16 @@ find_base_value (src) The test above is not sufficient because the scheduler may move a copy out of an arg reg past the NOTE_INSN_FUNCTION_BEGIN. */ if ((regno >= FIRST_PSEUDO_REGISTER || fixed_regs[regno]) - && regno < reg_base_value_size - && reg_base_value[regno]) - return reg_base_value[regno]; + && regno < reg_base_value_size) + { + /* If we're inside init_alias_analysis, use new_reg_base_value + to reduce the number of relaxation iterations. */ + if (new_reg_base_value && new_reg_base_value[regno]) + return new_reg_base_value[regno]; + + if (reg_base_value[regno]) + return reg_base_value[regno]; + } return src; @@ -2744,7 +2751,7 @@ init_alias_analysis () /* We're at the start of the function each iteration through the loop, so we're copying arguments. */ - copying_arguments = 1; + copying_arguments = true; /* Wipe the potential alias information clean for this pass. */ memset ((char *) new_reg_base_value, 0, reg_base_value_size * sizeof (rtx)); @@ -2834,7 +2841,7 @@ init_alias_analysis () } else if (GET_CODE (insn) == NOTE && NOTE_LINE_NUMBER (insn) == NOTE_INSN_FUNCTION_BEG) - copying_arguments = 0; + copying_arguments = false; } /* Now propagate values from new_reg_base_value to reg_base_value. */ |