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-rw-r--r--byterun/interp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/byterun/interp.c b/byterun/interp.c
index abf504131..ed6b154c1 100644
--- a/byterun/interp.c
+++ b/byterun/interp.c
@@ -143,7 +143,7 @@ sp is a local copy of the global variable caml_extern_sp. */
#define SP_REG asm("%edi")
#define ACCU_REG
#endif
-#if defined(PPC) || defined(_POWER) || defined(_IBMR2)
+#ifdef __ppc__
#define PC_REG asm("26")
#define SP_REG asm("27")
#define ACCU_REG asm("28")