------- Comment #1 from hjl dot tools at gmail dot com 2008-05-17 02:17 -------
With this patch to verify alignment of caller-save slot:
Index: caller-save.c
===================================================================
--- caller-save.c (revision 2603)
+++ caller-save.c (working copy)
@@ -704,6 +704,12 @@ insert_restore (struct insn_chain *chain
mem = adjust_address (mem, save_mode[regno], 0);
else
mem = copy_rtx (mem);
+
+ /* Verify that the alignment of spill space is equal to or greater
+ than required. */
+ if (GET_MODE_ALIGNMENT (GET_MODE (mem)) > MEM_ALIGN (mem))
+ gcc_unreachable ();
+
pat = gen_rtx_SET (VOIDmode,
gen_rtx_REG (GET_MODE (mem),
regno), mem);
@@ -776,6 +782,12 @@ insert_save (struct insn_chain *chain, i
mem = adjust_address (mem, save_mode[regno], 0);
else
mem = copy_rtx (mem);
+
+ /* Verify that the alignment of spill space is equal to or greater
+ than required. */
+ if (GET_MODE_ALIGNMENT (GET_MODE (mem)) > MEM_ALIGN (mem))
+ gcc_unreachable ();
+
pat = gen_rtx_SET (VOIDmode, mem,
gen_rtx_REG (GET_MODE (mem),
regno));
Index: function.c
===================================================================
--- function.c (revision 2603)
+++ function.c (working copy)
@@ -341,7 +341,7 @@ assign_stack_local (enum machine_mode mo
{
rtx x, addr;
int bigend_correction = 0;
- unsigned int alignment;
+ unsigned int alignment, alignment_in_bits;
int frame_off, frame_alignment, frame_phase;
if (align == 0)
@@ -378,8 +378,10 @@ assign_stack_local (enum machine_mode mo
if (alignment * BITS_PER_UNIT > PREFERRED_STACK_BOUNDARY)
alignment = PREFERRED_STACK_BOUNDARY / BITS_PER_UNIT;
- if (crtl->stack_alignment_needed < alignment * BITS_PER_UNIT)
- crtl->stack_alignment_needed = alignment * BITS_PER_UNIT;
+ alignment_in_bits = alignment * BITS_PER_UNIT;
+
+ if (crtl->stack_alignment_needed < alignment_in_bits)
+ crtl->stack_alignment_needed = alignment_in_bits;
/* Calculate how many bytes the start of local variables is off from
stack alignment. */
@@ -432,6 +434,7 @@ assign_stack_local (enum machine_mode mo
frame_offset += size;
x = gen_rtx_MEM (mode, addr);
+ set_mem_align (x, alignment_in_bits);
MEM_NOTRAP_P (x) = 1;
stack_slot_list
On Linux/Intel64, I got
gnu/java/awt/GradientPaintContext.java: In class
'gnu.java.awt.GradientPaintContext':
gnu/java/awt/GradientPaintContext.java: In method
'gnu.java.awt.GradientPaintContext.getRaster(int,int,int,int)':
In file included from gnu/java/awt/EventModifier.java:105,
from gnu/java/awt/EmbeddedWindow.java:137,
from gnu/java/awt/ComponentReshapeEvent.java:84,
from gnu/java/awt/ComponentDataBlitOp.java:154,
from gnu/java/awt/ClasspathToolkit.java:231,
from gnu/java/awt/ClasspathGraphicsEnvironment.java:65,
from gnu/java/awt/Buffers.java:222,
from
/export/gnu/src/gcc-expand/gcc/libjava/classpath/gnu/java/awt/BitwiseXORComposite.java:292,
from
/export/gnu/src/gcc-expand/gcc/libjava/classpath/gnu/java/awt/BitwiseXORComposite.java:202,
from gnu/java/awt/BitwiseXORComposite.java:130,
from gnu/java/awt/BitMaskExtent.java:77,
from
/export/gnu/src/gcc-expand/gcc/libjava/classpath/gnu/java/awt/AWTUtilities.java:253,
from
/export/gnu/src/gcc-expand/gcc/libjava/classpath/gnu/java/awt/AWTUtilities.java:296,
from gnu/java/awt/AWTUtilities.java:895,
from <built-in>:63:
gnu/java/awt/GradientPaintContext.java:153: internal compiler error: in
insert_save, at caller-save.c:789
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[6]: *** [gnu/java/awt.lo] Error 1
make[6]: *** Waiting for unfinished jobs....
when I was building 32bit libjava.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36253
