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S/390: PR68015 Fix ICE in s390_emit_compare 

gcc/ChangeLog:

2015-10-22  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	PR target/68015
	* config/s390/s390.md (mov<mode>cc): Emit compare only if we don't
	already have a comparison result.

gcc/testsuite/ChangeLog:

2015-10-22  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

	PR target/68015
	* gcc.target/s390/pr68015.c: New test.

From-SVN: r229163
This commit is contained in:
Andreas Krebbel 2015-10-22 08:24:01 +00:00 committed by Andreas Krebbel
parent 597bb9db4a
commit 7477de01a8
4 changed files with 42 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2015-10-22 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
PR target/68015
* config/s390/s390.md (mov<mode>cc): Emit compare only if we don't
already have a comparison result.
2015-10-22 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR target/63304

9
gcc/config/s390/s390.md
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@ -6108,8 +6108,13 @@
(match_operand:GPR 2 "nonimmediate_operand" "")
(match_operand:GPR 3 "nonimmediate_operand" "")))]
"TARGET_Z196"
"operands[1] = s390_emit_compare (GET_CODE (operands[1]),
XEXP (operands[1], 0), XEXP (operands[1], 1));")
{
/* Emit the comparison insn in case we do not already have a comparison result. */
if (!s390_comparison (operands[1], VOIDmode))
operands[1] = s390_emit_compare (GET_CODE (operands[1]),
XEXP (operands[1], 0),
XEXP (operands[1], 1));
})
; locr, loc, stoc, locgr, locg, stocg
(define_insn_and_split "*mov<mode>cc"

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2015-10-22 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
PR target/68015
* gcc.target/s390/pr68015.c: New test.
2015-10-22 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR testsuite/67948

24
gcc/testsuite/gcc.target/s390/pr68015.c Normal file
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@ -0,0 +1,24 @@
/* { dg-compile } */
/* { dg-options "-O2 -march=z196" } */
extern long useme (long, ...);
void
foo (void)
{
long secs = useme (41);
long utc_secs = useme (42);
long h, m;
utc_secs = useme (42);
h = secs / 3600;
m = secs / 60;
if (utc_secs >= 86400)
{
m = 59;
h--;
if (h < 0)
h = 23;
}
useme (h, m);
}