Hi,

Darwin defines '__POWERPC__' rather than '__powerpc__' so check for
the upper case version too in order to select the correct register
name.

tested on powerpc-darwin9, , applied to mainline.
thanks
Iain

gcc/testsuite:

2019-09-19  Iain Sandoe  <i...@sandoe.co.uk>

        * gcc.dg/pr89313.c: Test for __POWERPC__ in addition to
        __powerpc__ in register name selection.


diff --git a/gcc/testsuite/gcc.dg/pr89313.c b/gcc/testsuite/gcc.dg/pr89313.c
index 6688323fbd..76cb0910b9 100644
--- a/gcc/testsuite/gcc.dg/pr89313.c
+++ b/gcc/testsuite/gcc.dg/pr89313.c
@@ -8,7 +8,7 @@
 # define REG "r0"
 #elif defined (__i386__)
 # define REG "%eax"
-#elif defined (__powerpc__)
+#elif defined (__powerpc__) || defined (__POWERPC__)
 # define REG "r3"
 #elif defined (__s390__)
 # define REG "0"

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