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authorBernd Schmidt <bernds@codesourcery.com>2012-04-26 14:20:39 +0000
committerBernd Schmidt <bernds@gcc.gnu.org>2012-04-26 14:20:39 +0000
commite90247f8bac2b058550d5e3af7873fa2768624d2 (patch)
treecc9676874f6a1ec2605d4af7227233a8650f66f1
parent81c082ecd2881c3d1ed9387e4deeb922f74a8c4f (diff)
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re PR middle-end/52940 (conversion from MODE_PARTIAL_INT uses sign extension for unsigned types)
PR middle-end/52940 * machmode.h (CLASS_HAS_WIDER_MODES_P): True for MODE_PARTIAL_INT. * expr.c (convert_move): Honor unsignedp when extending partial int modes. * genmodes.c (complete_mode): Don't clear component field of partial int modes. (emit_mode_inner): Don't emit it however. (calc_wider_mode): Partial int modes widen to their component. From-SVN: r186877
-rw-r--r--gcc/ChangeLog9
-rw-r--r--gcc/expr.c13
-rw-r--r--gcc/genmodes.c12
-rw-r--r--gcc/machmode.h1
4 files changed, 25 insertions, 10 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0515b9f..2ca14ff 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -3,6 +3,15 @@
* PR middle-end/52997
* ira.c (find_moveable_pseudos): Call resize_reg_info.
+ PR middle-end/52940
+ * machmode.h (CLASS_HAS_WIDER_MODES_P): True for MODE_PARTIAL_INT.
+ * expr.c (convert_move): Honor unsignedp when extending partial int
+ modes.
+ * genmodes.c (complete_mode): Don't clear component field of partial
+ int modes.
+ (emit_mode_inner): Don't emit it however.
+ (calc_wider_mode): Partial int modes widen to their component.
+
2012-04-26 David S. Miller <davem@davemloft.net>
* config/sparc/niagara4.md: New file.
diff --git a/gcc/expr.c b/gcc/expr.c
index 81112da..3e8e004 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -438,21 +438,20 @@ convert_move (rtx to, rtx from, int unsignedp)
rtx new_from;
enum machine_mode full_mode
= smallest_mode_for_size (GET_MODE_BITSIZE (from_mode), MODE_INT);
+ convert_optab ctab = unsignedp ? zext_optab : sext_optab;
+ enum insn_code icode;
- gcc_assert (convert_optab_handler (sext_optab, full_mode, from_mode)
- != CODE_FOR_nothing);
+ icode = convert_optab_handler (ctab, full_mode, from_mode);
+ gcc_assert (icode != CODE_FOR_nothing);
if (to_mode == full_mode)
{
- emit_unop_insn (convert_optab_handler (sext_optab, full_mode,
- from_mode),
- to, from, UNKNOWN);
+ emit_unop_insn (icode, to, from, UNKNOWN);
return;
}
new_from = gen_reg_rtx (full_mode);
- emit_unop_insn (convert_optab_handler (sext_optab, full_mode, from_mode),
- new_from, from, UNKNOWN);
+ emit_unop_insn (icode, new_from, from, UNKNOWN);
/* else proceed to integer conversions below. */
from_mode = full_mode;
diff --git a/gcc/genmodes.c b/gcc/genmodes.c
index 84517b9..d0095c3 100644
--- a/gcc/genmodes.c
+++ b/gcc/genmodes.c
@@ -360,7 +360,6 @@ complete_mode (struct mode_data *m)
m->bytesize = m->component->bytesize;
m->ncomponents = 1;
- m->component = 0; /* ??? preserve this */
break;
case MODE_COMPLEX_INT:
@@ -821,7 +820,13 @@ calc_wider_mode (void)
sortbuf[i] = 0;
for (j = 0; j < i; j++)
- sortbuf[j]->next = sortbuf[j]->wider = sortbuf[j + 1];
+ {
+ sortbuf[j]->next = sortbuf[j + 1];
+ if (c == MODE_PARTIAL_INT)
+ sortbuf[j]->wider = sortbuf[j]->component;
+ else
+ sortbuf[j]->wider = sortbuf[j]->next;
+ }
modes[c] = sortbuf[0];
}
@@ -1118,7 +1123,8 @@ emit_mode_inner (void)
for_all_modes (c, m)
tagged_printf ("%smode",
- m->component ? m->component->name : void_mode->name,
+ c != MODE_PARTIAL_INT && m->component
+ ? m->component->name : void_mode->name,
m->name);
print_closer ();
diff --git a/gcc/machmode.h b/gcc/machmode.h
index 4a3f6f5..6137c70 100644
--- a/gcc/machmode.h
+++ b/gcc/machmode.h
@@ -166,6 +166,7 @@ extern const unsigned char mode_class[NUM_MACHINE_MODES];
/* Nonzero if CLASS modes can be widened. */
#define CLASS_HAS_WIDER_MODES_P(CLASS) \
(CLASS == MODE_INT \
+ || CLASS == MODE_PARTIAL_INT \
|| CLASS == MODE_FLOAT \
|| CLASS == MODE_DECIMAL_FLOAT \
|| CLASS == MODE_COMPLEX_FLOAT \