From bdc572f9a42b6a68dec1a5593d5311f45bd29cc9 Mon Sep 17 00:00:00 2001 From: Juergen Christ Date: Fri, 6 Dec 2024 18:52:36 +0100 Subject: s390: Fix UNSPEC_CC_TO_INT canonicalization Canonicalization of comparisons for UNSPEC_CC_TO_INT missed one case causing unnecessarily complex code. This especially seems to hit the Linux kernel. gcc/ChangeLog: * config/s390/s390.cc (s390_canonicalize_comparison): Add missing UNSPEC_CC_TO_INT case. gcc/testsuite/ChangeLog: * gcc.target/s390/ccusage.c: New test. Signed-off-by: Juergen Christ --- gcc/config/s390/s390.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'gcc/config') diff --git a/gcc/config/s390/s390.cc b/gcc/config/s390/s390.cc index cec0548..573b229 100644 --- a/gcc/config/s390/s390.cc +++ b/gcc/config/s390/s390.cc @@ -1859,7 +1859,7 @@ s390_canonicalize_comparison (int *code, rtx *op0, rtx *op1, && CONST_INT_P (XEXP (*op0, 1)) && CONST_INT_P (*op1) && INTVAL (XEXP (*op0, 1)) == -3 - && *code == EQ) + && (*code == EQ || *code == NE)) { if (INTVAL (*op1) == 0) { -- cgit v1.1