From: Vincent Lejeune <vljn@ovi.com>
Date: Wed, 3 Oct 2012 19:40:49 +0000 (+0200)
Subject: radeon/llvm: add a pattern for fsqrt
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=876b42663c4a72040a2084ed094d5a496b86aecd;p=mesa.git

radeon/llvm: add a pattern for fsqrt

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
---

diff --git a/src/gallium/drivers/radeon/R600Instructions.td b/src/gallium/drivers/radeon/R600Instructions.td
index 1689a2f4ab8..01a5bba3431 100644
--- a/src/gallium/drivers/radeon/R600Instructions.td
+++ b/src/gallium/drivers/radeon/R600Instructions.td
@@ -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
 //===----------------------------------------------------------------------===//