The testcase g++.dg/inherit/thunk8.C tests for a specifically Thumb-1
bug by scanning the assembly output for text generated for Thumb-1
after the fix for that bug.
As such, this testcase only makes sense for Thumb-1. At present, it
requires the arm32 effective-target and passes -mthumb. The arm32
effective target means it *doesn't* run for plain Thumb-1 multilibs,
while it does run and fail for Thumb-2 multilibs, or ARMv7 multilibs
where -mthumb means Thumb-2.
This patch adds an effective target to describe where this test should
run: any ARM or Thumb multilib where -mthumb means Thumb-1. OK to
commit?
2008-07-24 Joseph Myers <
joseph@...>
* lib/target-supports.exp (check_effective_target_arm_thumb1_ok):
New.
* g++.dg/inherit/thunk8.C: Use it.
Index: g++.dg/inherit/thunk8.C
===================================================================
--- g++.dg/inherit/thunk8.C (revision 138097)
+++ g++.dg/inherit/thunk8.C (working copy)
@@ -3,7 +3,7 @@
Make sure that won't happen anymore. */
/* { dg-do compile } */
-/* { dg-require-effective-target arm32 } */
+/* { dg-require-effective-target arm_thumb1_ok } */
/* { dg-options "-mthumb -fPIC" } */
struct A {
Index: lib/target-supports.exp
===================================================================
--- lib/target-supports.exp (revision 138097)
+++ lib/target-supports.exp (working copy)
@@ -1249,6 +1249,17 @@
}
}
+# Return 1 is this is an ARM target where -mthumb causes Thumb-1 to be
+# used.
+
+proc check_effective_target_arm_thumb1_ok { } {
+ return [check_no_compiler_messages arm_thumb1_ok assembly {
+ #if !defined(__arm__) || !defined(__thumb__) || defined(__thumb2__)
+ #error FOO
+ #endif
+ } "-mthumb"]
+}
+
# Return 1 if the target supports executing NEON instructions, 0
# otherwise. Cache the result.
--
Joseph S. Myers
joseph@...
