radeon/llvm: add a pattern for fsqrt

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
2012-10-03 21:40:49 +02:00
parent 99802519b4
commit 876b42663c
1 changed files with 3 additions and 0 deletions
@@ -1018,6 +1018,9 @@ let Predicates = [isEGorCayman] in {
  def : Pat<(fp_to_uint R600_Reg32:$src),
    (FLT_TO_UINT_eg (TRUNC R600_Reg32:$src))>;

+  def : Pat<(fsqrt R600_Reg32:$src),
+    (MUL R600_Reg32:$src, (RECIPSQRT_CLAMPED_eg R600_Reg32:$src))>;
+
 //===----------------------------------------------------------------------===//
 // Memory read/write instructions
 //===----------------------------------------------------------------------===//