1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
This patch address an issue with the compiler generating an ICE
during compliation of lttng-ust.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50099
Upstream-Status: Pending
Signed-off-by: Khem Raj <khem.raj@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Index: gcc/config/arm/arm.md
===================================================================
--- gcc-4.6.0/gcc/config/arm/arm.md (revision 178135)
+++ gcc-4.6.0/gcc/config/arm/arm.md (working copy)
@@ -4217,6 +4217,7 @@ (define_split
"TARGET_32BIT"
[(set (match_dup 0) (ashiftrt:SI (match_dup 1) (const_int 31)))]
{
+ rtx srcop = operands[1];
rtx lo_part = gen_lowpart (SImode, operands[0]);
enum machine_mode src_mode = GET_MODE (operands[1]);
@@ -4224,14 +4225,21 @@ (define_split
&& !reg_overlap_mentioned_p (operands[0], operands[1]))
emit_clobber (operands[0]);
+ if (TARGET_ARM && src_mode == QImode
+ && !arm_reg_or_extendqisi_mem_op (srcop, QImode))
+ {
+ rtx dest = gen_lowpart (QImode, lo_part);
+ emit_move_insn (dest, srcop);
+ srcop = dest;
+ }
if (!REG_P (lo_part) || src_mode != SImode
- || !rtx_equal_p (lo_part, operands[1]))
+ || !rtx_equal_p (lo_part, srcop))
{
if (src_mode == SImode)
- emit_move_insn (lo_part, operands[1]);
+ emit_move_insn (lo_part, srcop);
else
emit_insn (gen_rtx_SET (VOIDmode, lo_part,
- gen_rtx_SIGN_EXTEND (SImode, operands[1])));
+ gen_rtx_SIGN_EXTEND (SImode, srcop)));
operands[1] = lo_part;
}
operands[0] = gen_highpart (SImode, operands[0]);
|
