Fix problem with calling powi* builtins.

OKed by Richard Henderson.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@97278 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 8 insertions, 4 deletions

diff --git a/gcc/builtins.c b/gcc/builtins.c
index 68b91c56772..fb044de52ac 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -2380,6 +2380,7 @@ expand_builtin_powi (tree exp, rtx target, rtx subtarget)
   tree arg0, arg1;
   rtx op0, op1;
   enum machine_mode mode;
+  enum machine_mode mode2;
 
   if (! validate_arglist (arglist, REAL_TYPE, INTEGER_TYPE, VOID_TYPE))
     return 0;
@@ -2411,19 +2412,22 @@ expand_builtin_powi (tree exp, rtx target, rtx subtarget)
 
   /* Emit a libcall to libgcc.  */
 
+  /* Mode of the 2nd argument must match that of an int. */
+  mode2 = mode_for_size (INT_TYPE_SIZE, MODE_INT, 0);
+
   if (target == NULL_RTX)
     target = gen_reg_rtx (mode);
 
   op0 = expand_expr (arg0, subtarget, mode, 0);
   if (GET_MODE (op0) != mode)
     op0 = convert_to_mode (mode, op0, 0);
-  op1 = expand_expr (arg1, 0, word_mode, 0);
-  if (GET_MODE (op1) != word_mode)
-    op1 = convert_to_mode (word_mode, op1, 0);
+  op1 = expand_expr (arg1, 0, mode2, 0);
+  if (GET_MODE (op1) != mode2)
+    op1 = convert_to_mode (mode2, op1, 0);
 
   target = emit_library_call_value (powi_optab->handlers[(int) mode].libfunc,
 				    target, LCT_CONST_MAKE_BLOCK, mode, 2,
-				    op0, mode, op1, word_mode);
+				    op0, mode, op1, mode2);
 
   return target;
 }