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-rw-r--r--gcc/config/rs6000/rs6000.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h
index 8c606ab0aea..dafe3acf912 100644
--- a/gcc/config/rs6000/rs6000.h
+++ b/gcc/config/rs6000/rs6000.h
@@ -1523,6 +1523,7 @@ enum r6000_reg_class_enum {
RS6000_CONSTRAINT_f, /* fpr registers for single values */
RS6000_CONSTRAINT_v, /* Altivec registers */
RS6000_CONSTRAINT_wa, /* Any VSX register */
+ RS6000_CONSTRAINT_wb, /* Altivec register if ISA 3.0 vector. */
RS6000_CONSTRAINT_wd, /* VSX register for V2DF */
RS6000_CONSTRAINT_we, /* VSX register if ISA 3.0 vector. */
RS6000_CONSTRAINT_wf, /* VSX register for V4SF */