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* [gcc r9-9837] IBM Z: Fix load-and-test peephole2 condition
@ 2021-11-22 9:22 Stefan Schulze Frielinghaus
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From: Stefan Schulze Frielinghaus @ 2021-11-22 9:22 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:25cb228160dda23837db36a72ce418f79e5054a7
commit r9-9837-g25cb228160dda23837db36a72ce418f79e5054a7
Author: Stefan Schulze Frielinghaus <stefansf@linux.ibm.com>
Date: Fri Nov 19 16:56:56 2021 +0100
IBM Z: Fix load-and-test peephole2 condition
For a peephole2 condition variable insn points to the first matched
insn. In order to refer to the second matched insn use
peep2_next_insn(1) instead.
gcc/ChangeLog:
* config/s390/s390.md (define_peephole2): Variable insn points
to the first matched insn. Use peep2_next_insn(1) to refer to
the second matched insn.
gcc/testsuite/ChangeLog:
* gcc.target/s390/20211119.c: New test.
(cherry picked from commit f47870e6a272dfe740a38422030c6c68e0fc7ff8)
Diff:
---
gcc/config/s390/s390.md | 2 +-
gcc/testsuite/gcc.target/s390/20211119.c | 12 ++++++++++++
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md
index 5a3496ac92e..68392da4acd 100644
--- a/gcc/config/s390/s390.md
+++ b/gcc/config/s390/s390.md
@@ -973,7 +973,7 @@
(match_operand:GPR 2 "memory_operand"))
(set (reg CC_REGNUM)
(compare (match_dup 0) (match_operand:GPR 1 "const0_operand")))]
- "s390_match_ccmode(insn, CCSmode) && TARGET_EXTIMM
+ "s390_match_ccmode (peep2_next_insn (1), CCSmode) && TARGET_EXTIMM
&& GENERAL_REG_P (operands[0])
&& satisfies_constraint_T (operands[2])
&& !contains_constant_pool_address_p (operands[2])"
diff --git a/gcc/testsuite/gcc.target/s390/20211119.c b/gcc/testsuite/gcc.target/s390/20211119.c
new file mode 100644
index 00000000000..b9d216389f4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/s390/20211119.c
@@ -0,0 +1,12 @@
+/* { dg-do run { target { s390_useable_hw } } } */
+/* { dg-options "-Os -march=z10" } */
+signed char a;
+int b = -925974181, c;
+unsigned *d = &b;
+int *e = &c;
+int main() {
+ *e = ((217 ^ a) > 585) < *d;
+ if (c != 1)
+ __builtin_abort();
+ return 0;
+}
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