i386: Fix up ix86_expand_int_sse_cmp [PR107585]
authorJakub Jelinek <jakub@redhat.com>
Thu, 10 Nov 2022 10:46:52 +0000 (11:46 +0100)
committerJakub Jelinek <jakub@redhat.com>
Thu, 10 Nov 2022 10:46:52 +0000 (11:46 +0100)
commit49de156a6adb50e0624479f22c20141cadef812d
treebfc6a7124dc43f0b477a5706f5c9823cd9a90315
parent9072763f4f17e600a980ff510b2baf8ad8ada1b5
i386: Fix up ix86_expand_int_sse_cmp [PR107585]

The following patch fixes ICE on the testcase.  I've used GEN_INT
incorrectly thinking the code punts on the problematic boundaries.
It does, but only for LE and GE, i.e. signed comparisons, for unsigned
the boundaries are 0 and unsigned maximum, so when say unsigned char
adds one to 127 or subtracts one from 128 we need to canonicalize it.

2022-11-10  Jakub Jelinek  <jakub@redhat.com>

PR target/107585
PR target/107546
* config/i386/i386-expand.cc (ix86_expand_int_sse_cmp): Use
gen_int_mode rather than GEN_INT.

* gcc.dg/pr107585.c: New test.
gcc/config/i386/i386-expand.cc
gcc/testsuite/gcc.dg/pr107585.c [new file with mode: 0644]