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Re: [PATCH, i386]: Extend TARGET_READ_MODIFY{,_WRITE} peepholes to all integer modes


> I'm testing the attached patch. Does it fix your ada failures?

No, it totally breaks stack checking. :-(

                === acats tests ===
 FAIL:  c52103x
 FAIL:  c52104x
+FAIL:  c52104y
+FAIL:  cb1010a
+FAIL:  cb1010c
+FAIL:  cb1010d
 
                === acats Summary ===
-# of expected passes           2318
-# of unexpected failures       2
+# of expected passes           2314
+# of unexpected failures       6
 Native configuration is x86_64-suse-linux-gnu
 
                === gcc tests ===
@@ -133,11 +137,24 @@
 
 
 Running target unix
+FAIL: gnat.dg/opt49.adb 3 blank line(s) in output
+FAIL: gnat.dg/opt49.adb (test for excess errors)
+UNRESOLVED: gnat.dg/opt49.adb compilation failed to produce executable
+FAIL: gnat.dg/stack_check1.adb 3 blank line(s) in output
+FAIL: gnat.dg/stack_check1.adb (test for excess errors)
+UNRESOLVED: gnat.dg/stack_check1.adb compilation failed to produce executable
+FAIL: gnat.dg/stack_check2.adb 3 blank line(s) in output
+FAIL: gnat.dg/stack_check2.adb (test for excess errors)
+UNRESOLVED: gnat.dg/stack_check2.adb compilation failed to produce executable
+FAIL: gnat.dg/stack_check3.adb 3 blank line(s) in output
+FAIL: gnat.dg/stack_check3.adb (test for excess errors)


/home/eric/svn/gcc/gcc/testsuite/gnat.dg/opt49.adb:31:4: error: unrecognizable 
insn:
(insn 33 32 34 8 (parallel [
            (set (mem/v:DI (reg/f:DI 7 sp) [0  S8 A8])
                (unspec [
                        (const_int 0 [0])
                    ] UNSPEC_PROBE_STACK))
            (clobber (reg:CC 17 flags))
        ]) /home/eric/svn/gcc/gcc/testsuite/gnat.dg/opt49.adb:17 -1
     (nil))
+===========================GNAT BUG DETECTED==============================+
| 7.0.0 20160429 (experimental) [trunk revision 235619] (x86_64-suse-linux) 
GCC error:|
| in extract_insn, at recog.c:2287                                         |
| Error detected around 
/home/eric/svn/gcc/gcc/testsuite/gnat.dg/opt49.adb:31:4|

-- 
Eric Botcazou


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