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mips.c (mips_expand_prologue): Handle large frame with no outgoing arguments for mips16.

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* mips.c (mips_expand_prologue): Handle large frame with no outgoing
        arguments for mips16.
        (mips_expand_epilogue): Pass "orig_tsize" to save_restore_insns.
        Don't lose if tsize is zero after handling large stack for mips16.
        * mips.md (return): For trivial return, return address is in $31.

From-SVN: r17294
This commit is contained in:
Jeffrey A Law 1998-01-05 10:45:59 +00:00 committed by Jeff Law
parent eb774d8d9a
commit 8fa4e1b4e1
4 changed files with 18 additions and 14 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
Mon Jan 5 11:39:49 1998 Jeffrey A Law (law@cygnus.com)
* mips.c (mips_expand_prologue): Handle large frame with no outgoing
arguments for mips16.
(mips_expand_epilogue): Pass "orig_tsize" to save_restore_insns.
Don't lose if tsize is zero after handling large stack for mips16.
* mips.md (return): For trivial return, return address is in $31.
Sun Jan 4 20:24:00 1998 Nigel Stephens <nigel@algor.co.uk>
* mips/mips16.S: Various changes to make it work with -msingle-float

13
gcc/config/mips/mips.c
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@ -1,5 +1,5 @@
/* Subroutines for insn-output.c for MIPS
Copyright (C) 1989, 90, 91, 93-96, 1997 Free Software Foundation, Inc.
Copyright (C) 1989, 90, 91, 93-97, 1998 Free Software Foundation, Inc.
Contributed by A. Lichnewsky, lich@inria.inria.fr.
Changes by Michael Meissner, meissner@osf.org.
64 bit r4000 support by Ian Lance Taylor, ian@cygnus.com, and
@ -6559,9 +6559,10 @@ mips_expand_prologue ()
else if (TARGET_64BIT)
insn = emit_insn (gen_movdi (hard_frame_pointer_rtx, stack_pointer_rtx));
else
insn= emit_insn (gen_movsi (hard_frame_pointer_rtx, stack_pointer_rtx));
insn = emit_insn (gen_movsi (hard_frame_pointer_rtx, stack_pointer_rtx));
RTX_FRAME_RELATED_P (insn) = 1;
if (insn)
RTX_FRAME_RELATED_P (insn) = 1;
}
if (TARGET_ABICALLS && mips_abi != ABI_32)
@ -6749,7 +6750,7 @@ mips_expand_epilogue ()
& (1L << (PIC_OFFSET_TABLE_REGNUM - GP_REG_FIRST))))
emit_insn (gen_blockage ());
save_restore_insns (FALSE, tmp_rtx, tsize, (FILE *)0);
save_restore_insns (FALSE, tmp_rtx, orig_tsize, (FILE *)0);
/* In mips16 mode with a large frame, we adjust the stack
pointer before restoring the registers. In this case, we
@ -6759,10 +6760,10 @@ mips_expand_epilogue ()
abort ();
emit_insn (gen_blockage ());
if (TARGET_LONG64)
if (TARGET_LONG64 && tsize != 0)
emit_insn (gen_adddi3 (stack_pointer_rtx, stack_pointer_rtx,
tsize_rtx));
else
else if (tsize != 0)
emit_insn (gen_addsi3 (stack_pointer_rtx, stack_pointer_rtx,
tsize_rtx));
}

2
gcc/config/mips/mips.h
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@ -1,5 +1,5 @@
/* Definitions of target machine for GNU compiler. MIPS version.
Copyright (C) 1989, 90-6, 1997 Free Software Foundation, Inc.
Copyright (C) 1989, 90-97, 1998 Free Software Foundation, Inc.
Contributed by A. Lichnewsky (lich@inria.inria.fr).
Changed by Michael Meissner (meissner@osf.org).
64 bit r4000 support by Ian Lance Taylor (ian@cygnus.com) and

9
gcc/config/mips/mips.md
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@ -3,7 +3,7 @@
;; Changes by Michael Meissner, meissner@osf.org
;; 64 bit r4000 support by Ian Lance Taylor, ian@cygnus.com, and
;; Brendan Eich, brendan@microunity.com.
;; Copyright (C) 1989, 90-96, 1997 Free Software Foundation, Inc.
;; Copyright (C) 1989, 90-97, 1998 Free Software Foundation, Inc.
;; This file is part of GNU CC.
@ -8790,12 +8790,7 @@ move\\t%0,%z4\\n\\
(define_insn "return"
[(return)]
"mips_can_use_return_insn ()"
"*
{
if (TARGET_MIPS16)
return \"%*j\\t$7\";
return \"%*j\\t$31\";
}"
"%*j\\t$31"
[(set_attr "type" "jump")
(set_attr "mode" "none")
(set_attr "length" "1")])