On Thu, Jun 13, 2019 at 10:53:55AM +0200, Rainer Orth wrote:
> >> Even with that fixed, I see many failures:
> >>
> >> +FAIL: g++.dg/tree-ssa/pr31146.C -std=gnu++14 scan-tree-dump forwprop1
> >> "MEM\\\\[.*&i\\\\]\\\\[j.*\\\\] =.* 1;"
> >> +FAIL: g++.dg/tree-ssa/pr31146.C -std=gnu++17 scan-tree-dump forwprop1
> >> "MEM\\\\[.*&i\\\\]\\\\[j.*\\\\] =.* 1;"
> >> +FAIL: g++.dg/tree-ssa/pr31146.C -std=gnu++98 scan-tree-dump forwprop1
> >> "MEM\\\\[.*&i\\\\]\\\\[j.*\\\\] =.* 1;"
> >> +FAIL: g++.dg/tree-ssa/ssa-dse-1.C scan-tree-dump-times dse1 "MEM
> >> <char\\\\[176]> \\\\[\\\\(struct FixBuf \\\\*\\\\)&<retval> \\\\+
> >> [0-9]+B\\\\] = {}" 1
> >>
> >> on 32 and 64-bit i386-pc-solaris2.11 (and i686-pc-linux-gnu),
>
> these failures remain...
On i686-linux I can reproduce just the above ones.
The following should fix it. As we don't match exact offset on the MEM
because it varries between different architectures (24 bytes on with -m64,
28 bytes with -m32), we shouldn't match the store size either, as it is
200 - that offset, so 176 or 172 etc.
Tested on x86_64-linux, -m32/-m64, ok for trunk?
2019-06-13 Jakub Jelinek <ja...@redhat.com>
* g++.dg/tree-ssa/ssa-dse-1.C: Don't match exact number of chars of
= {} store.
* g++.dg/tree-ssa/pr31146.C: Change -fdump-tree-forwprop to
-fdump-tree-forwprop1 in dg-options. Expect <int[5]> in MEM.
--- gcc/testsuite/g++.dg/tree-ssa/ssa-dse-1.C.jj 2019-06-13
00:35:49.654840275 +0200
+++ gcc/testsuite/g++.dg/tree-ssa/ssa-dse-1.C 2019-06-13 12:40:14.492568336
+0200
@@ -98,4 +98,4 @@ int main()
/* { dg-final { scan-tree-dump-times "MEM\\\[\\(struct FixBuf \\*\\)&<retval>
\\+ \[0-9\]+B\\\] = {}" 1 "dse1" { target { ! store_merge } } } }
- { dg-final { scan-tree-dump-times "MEM <char\\\[176]> \\\[\\(struct FixBuf
\\*\\)&<retval> \\+ \[0-9\]+B\\\] = {}" 1 "dse1" { target { store_merge } } } }
*/
+ { dg-final { scan-tree-dump-times "MEM <char\\\[\[0-9\]+]> \\\[\\(struct
FixBuf \\*\\)&<retval> \\+ \[0-9\]+B\\\] = {}" 1 "dse1" { target { store_merge
} } } } */
--- gcc/testsuite/g++.dg/tree-ssa/pr31146.C.jj 2015-05-29 15:04:33.039803414
+0200
+++ gcc/testsuite/g++.dg/tree-ssa/pr31146.C 2019-06-13 12:24:15.895576933
+0200
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options "-O -fdump-tree-forwprop" } */
+/* { dg-options "-O -fdump-tree-forwprop1" } */
/* We should be able to optimize this to i[j] = 1 during
early optimizations. */
@@ -12,4 +12,4 @@ void foo (int j)
*q = 1;
}
-/* { dg-final { scan-tree-dump "MEM\\\[.*&i\\\]\\\[j.*\\\] =.* 1;" "forwprop1"
} } */
+/* { dg-final { scan-tree-dump "MEM <int\\\[5\\\]> \\\[.*&i\\\]\\\[j.*\\\] =.*
1;" "forwprop1" } } */
Jakub
