Hi!
The following testcase fails to assemble due to clgte %r6,0(%r1,%r10)
insn not being accepted by assembler.
My rough understanding is that in the RSY-b insn format the spot
in other formats used for index registers is used instead for M3 what
kind of comparison it is, so this patch follows what other similar
instructions use for constraint (i.e. one without index register).
Bootstrapped on s390x-linux, regtest there still pending, ok for
trunk if it passes it?
2022-03-05 Jakub Jelinek <ja...@redhat.com>
PR target/104775
* config/s390/s390.md (*cmp_and_trap_unsigned_int<mode>): Use
S constraint instead of T in the last alternative.
* gcc.target/s390/pr104775.c: New test.
--- gcc/config/s390/s390.md.jj 2022-02-08 20:08:13.873404137 +0100
+++ gcc/config/s390/s390.md 2022-03-04 14:38:23.252988476 +0100
@@ -9578,7 +9578,7 @@ (define_insn "*cmp_and_trap_signed_int<m
(define_insn "*cmp_and_trap_unsigned_int<mode>"
[(trap_if (match_operator 0 "s390_unsigned_integer_comparison"
[(match_operand:GPR 1 "register_operand" "d,d,d")
- (match_operand:GPR 2 "general_operand" "d,D,T")])
+ (match_operand:GPR 2 "general_operand" "d,D,S")])
(const_int 0))]
"TARGET_Z10"
"@
--- gcc/testsuite/gcc.target/s390/pr104775.c.jj 2022-03-04 14:49:58.190134898
+0100
+++ gcc/testsuite/gcc.target/s390/pr104775.c 2022-03-04 14:49:42.845352647
+0100
@@ -0,0 +1,14 @@
+/* PR target/104775 */
+/* { dg-do assemble { target s390_zEC12_hw } } */
+/* { dg-options "-O2 -march=zEC12" } */
+
+long a[64];
+void bar (void);
+
+void
+foo (int x, int y)
+{
+ if (x != a[y])
+ bar ();
+ __builtin_trap ();
+}
Jakub
