https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90883
--- Comment #31 from Kito Cheng <kito at gcc dot gnu.org> ---
Maybe we could add --param max-inline-insns-size=1 to compile flag and add
mips* and aarch64 into xfail list to make every target happy for this test
case? and if some other target fail is cause by the CLEAR_RATIO too, they
should add into xfail list.
Patch here:
diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr90883.C
b/gcc/testsuite/g++.dg/tree-ssa/pr90883.C
index c5faffa1f32..0e622f263d2 100644
--- a/gcc/testsuite/g++.dg/tree-ssa/pr90883.C
+++ b/gcc/testsuite/g++.dg/tree-ssa/pr90883.C
@@ -1,4 +1,4 @@
-// { dg-options "-O2 -Os -fdump-tree-dse-details -std=c++11" }
+// { dg-options "-O2 -Os -fdump-tree-dse-details -std=c++11 --param
max-inline-insns-size=1" }
class C
@@ -15,6 +15,6 @@
// We want to match enough here to capture that we deleted an empty
// constructor store
-// { dg-final { scan-tree-dump "Deleted redundant store: .*\.a = {}" "dse1" {
target { ! i?86-*-* } } } }
-// { dg-final { scan-tree-dump "Deleted redundant store: .*\.a = {}" "dse2" {
target i?86-*-* } } }
+// aarch64 and mips will expand into loop to clear because CLEAR_RATIO.
+// { dg-final { scan-tree-dump "Deleted redundant store: .*\.a = {}" "dse1" {
xfail { aarch64-*-* mips*-*-* } } } }
