testsuite: Fix up pr99305.C test on unsigned_char targets [PR99498]

On unsigned_char targets, the cast stmt to unsigned char is obviously
not needed (and shouldn't be there).  But it doesn't hurt to test
the rest also on targets where char is unsigned.

2021-03-10  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/99305
	PR testsuite/99498
	* g++.dg/opt/pr99305.C: Don't expect cast to unsigned char on
	unsigned_char effective targets.

diff --git a/gcc/testsuite/g++.dg/opt/pr99305.C b/gcc/testsuite/g++.dg/opt/pr99305.C
index 8a91277..6fcdef3 100644 (file)
--- a/gcc/testsuite/g++.dg/opt/pr99305.C
+++ b/gcc/testsuite/g++.dg/opt/pr99305.C
@@ -1,7 +1,7 @@
 // PR tree-optimization/99305
 // { dg-do compile }
 // { dg-options "-O3 -fno-ipa-icf -fdump-tree-optimized" }
-// { dg-final { scan-tree-dump-times " = \\\(unsigned char\\\) c_\[0-9]*\\\(D\\\);" 3 "optimized" } }
+// { dg-final { scan-tree-dump-times " = \\\(unsigned char\\\) c_\[0-9]*\\\(D\\\);" 3 "optimized" { target { ! unsigned_char } } } }
 // { dg-final { scan-tree-dump-times " = \[^\n\r]* \\+ \[0-9]*;" 3 "optimized" } }
 // { dg-final { scan-tree-dump-times " = \[^\n\r]* <= 9;" 3 "optimized" } }
 // { dg-final { scan-tree-dump-not "if \\\(c_\[0-9]*\\\(D\\\) \[!=]= 0\\\)" "optimized" } }