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s390.c (s390_O_constraint_str): Limit the range for 'On' to -4G+1..-1.

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2007-12-12  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390.c (s390_O_constraint_str): Limit the range
	for 'On' to -4G+1..-1.
	* config/s390/constraints.md: Adjust comment accordingly.

2007-12-12  Andreas Krebbel  <krebbel1@de.ibm.com>

	* gcc.target/s390/20071212-1.c: New testcase.

From-SVN: r130787
This commit is contained in:
Andreas Krebbel 2007-12-12 09:15:03 +00:00 committed by Andreas Krebbel
parent 675575f57a
commit ee3f344964
5 changed files with 24 additions and 4 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2007-12-12 Andreas Krebbel <krebbel1@de.ibm.com>
* config/s390/s390.c (s390_O_constraint_str): Limit the range
for 'On' to -4G+1..-1.
* config/s390/constraints.md: Adjust comment accordingly.
2007-12-11 Nathan Sidwell <nathan@codesourcery.com>
* config/rs6000/rs6000.c (rs6000_emit_prologue): Use frame_reg_rtx

4
gcc/config/s390/constraints.md
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@ -49,7 +49,7 @@
;; O -- Multiple letter constraint followed by 1 parameter.
;; s: Signed extended immediate value (-2G .. 2G-1).
;; p: Positive extended immediate value (0 .. 4G-1).
;; n: Negative extended immediate value (-4G .. -1).
;; n: Negative extended immediate value (-4G+1 .. -1).
;; These constraints do not accept any operand if the machine does
;; not provide the extended-immediate facility.
;; P -- Any integer constant that can be loaded without literal pool.
@ -337,7 +337,7 @@
(define_constraint "On"
"@internal
Negative extended immediate value (-4G .. -1).
Negative extended immediate value (-4G+1 .. -1).
This constraint will only match if the machine provides
the extended-immediate facility."
(and (match_code "const_int")

3
gcc/config/s390/s390.c
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@ -2056,8 +2056,7 @@ s390_O_constraint_str (const char c, HOST_WIDE_INT value)
|| s390_single_part (GEN_INT (value), DImode, SImode, 0) == 1;
case 'n':
return value == -1
|| s390_single_part (GEN_INT (value), DImode, SImode, -1) == 1;
return s390_single_part (GEN_INT (value - 1), DImode, SImode, -1) == 1;
default:
gcc_unreachable ();

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2007-12-12 Andreas Krebbel <krebbel1@de.ibm.com>
* gcc.target/s390/20071212-1.c: New testcase.
2007-12-11 Jakub Jelinek <jakub@redhat.com>
PR c++/34238

11
gcc/testsuite/gcc.target/s390/20071212-1.c Normal file
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@ -0,0 +1,11 @@
/* This used to fail due to bug in the On constraint causing a slgfi
to be emitted with an immediate not fitting into 32bit. */
/* { dg-do compile } */
/* { dg-options "-O3 -march=z9-109" } */
long
foo (long a)
{
return a - (1ULL << 32);
}