[PATCH, d] Committed fix GNU_StackGrowsDown version always predefined

[Iain Buclaw]

Hi,

This patch fixes a small logic bug, where GNU_StackGrowsDown was
always predefined in the D language environment.  Instead, don't
define it where STACK_GROWS_DOWNWARD is defined as zero.  With this,
the correct libphobos code paths will now be compiled on hppa-*
targets.

Bootstrapped and regression tested on x86_64-linux-gnu.

Committed to trunk as r268106.

-- 
Iain
---
gcc/d/ChangeLog:

2019-01-20  Iain Buclaw  <ibuc...@gdcproject.org>

    * d-builtins.cc (d_init_versions): Check value of
    STACK_GROWS_DOWNWARD.
---

diff --git a/gcc/d/d-builtins.cc b/gcc/d/d-builtins.cc
index 564e8c6a7b1..b0a315a3ed9 100644
--- a/gcc/d/d-builtins.cc
+++ b/gcc/d/d-builtins.cc
@@ -417,9 +417,8 @@ d_init_versions (void)
   if (!targetm.have_tls)
     VersionCondition::addPredefinedGlobalIdent ("GNU_EMUTLS");
 
-#ifdef STACK_GROWS_DOWNWARD
-  VersionCondition::addPredefinedGlobalIdent ("GNU_StackGrowsDown");
-#endif
+  if (STACK_GROWS_DOWNWARD)
+    VersionCondition::addPredefinedGlobalIdent ("GNU_StackGrowsDown");
 
   /* Should define this anyway to set us apart from the competition.  */
   VersionCondition::addPredefinedGlobalIdent ("GNU_InlineAsm");