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| author | Jeff Law <law@redhat.com> | 2002-07-10 12:26:59 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2002-07-10 12:26:59 -0600 |
| commit | 7a46491380a94b817c90052503ff98661a0b64da (patch) | |
| tree | ccc42016c524fb665f06982bc2055368419109ff /gcc | |
| parent | 15c7fb9cfd93a55e8140cb70434a1c9fce2539d4 (diff) | |
| download | gcc-7a46491380a94b817c90052503ff98661a0b64da.zip gcc-7a46491380a94b817c90052503ff98661a0b64da.tar.gz gcc-7a46491380a94b817c90052503ff98661a0b64da.tar.bz2 | |
mn10200.c (expand_prologue): Create REG_MAYBE_DEAD notes as appropriate.
* mn10200.c (expand_prologue): Create REG_MAYBE_DEAD notes
as appropriate.
From-SVN: r55373
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/config/mn10200/mn10200.c | 20 |
2 files changed, 18 insertions, 5 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index db0924d..2db2b0c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -4,6 +4,9 @@ Wed Jul 10 18:48:55 CEST 2002 Jan Hubicka <jh@suse.cz> 2002-07-10 Jeffrey A Law <law@redhat.com> + * mn10200.c (expand_prologue): Create REG_MAYBE_DEAD notes + as appropriate. + * mn10200.c (expand_epilogue): Fix test to determine which scratch register to use. diff --git a/gcc/config/mn10200/mn10200.c b/gcc/config/mn10200/mn10200.c index e9f34b8..66ee9ad 100644 --- a/gcc/config/mn10200/mn10200.c +++ b/gcc/config/mn10200/mn10200.c @@ -690,13 +690,23 @@ expand_prologue () } /* Now put the static chain back where the rest of the function - expects to find it. */ + expects to find it. + + Note that we may eliminate all references to this later, so we + mark the static chain as maybe dead. */ if (current_function_needs_context) { - emit_move_insn (gen_rtx_REG (PSImode, STATIC_CHAIN_REGNUM), - gen_rtx (MEM, PSImode, - gen_rtx_PLUS (PSImode, stack_pointer_rtx, - GEN_INT (size)))); + rtx insn; + + insn = emit_move_insn (gen_rtx_REG (PSImode, STATIC_CHAIN_REGNUM), + gen_rtx (MEM, PSImode, + gen_rtx_PLUS (PSImode, + stack_pointer_rtx, + GEN_INT (size)))); + REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_MAYBE_DEAD, + const0_rtx, + REG_NOTES (insn)); + } } |