Analysis shows that after the CD-DCE change we produce better
code which makes if-to-switch run into case-values-threshold on
some architectures, thus the switch is deemed to simple to be
worth generating. The following statically provides
--param case-values-threshold to make the testcase less
target dependent.
Tested on x86_64-unknown-linux-gnu, pushed.
2021-11-18 Richard Biener <rguent...@suse.de>
PR testsuite/103278
* gcc.dg/tree-ssa/if-to-switch-3.c: Supply
--param case-values-threshold=4.
---
gcc/testsuite/gcc.dg/tree-ssa/if-to-switch-3.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/if-to-switch-3.c
b/gcc/testsuite/gcc.dg/tree-ssa/if-to-switch-3.c
index 707e6304892..a55231b3341 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/if-to-switch-3.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/if-to-switch-3.c
@@ -1,5 +1,6 @@
/* { dg-do compile } */
-/* { dg-options "-O2 -fdump-tree-iftoswitch-optimized" } */
+/* Supplying case-values-threshold makes the testcase less target dependent.
*/
+/* { dg-options "-O2 -fdump-tree-iftoswitch-optimized --param
case-values-threshold=4" } */
int IsMySuperRandomChar(int aChar)
{
--
2.31.1
