From 48b809e6e5cf4a7d1b876ac1d56a9e32df506f76 Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Fri, 19 Apr 2013 02:11:06 +0000
Subject: R600: Add pattern for the BFI_INT instruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179830 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/R600/AMDGPUInstructions.td | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'lib/Target/R600/AMDGPUInstructions.td')

diff --git a/lib/Target/R600/AMDGPUInstructions.td b/lib/Target/R600/AMDGPUInstructions.td
index fa890c1..4b37a53 100644
--- a/lib/Target/R600/AMDGPUInstructions.td
+++ b/lib/Target/R600/AMDGPUInstructions.td
@@ -261,6 +261,26 @@ class DwordAddrPat<ValueType vt, RegisterClass rc> : Pat <
   (vt rc:$addr)
 >;
 
+// BFI_INT patterns
+
+multiclass BFIPatterns <Instruction BFI_INT> {
+
+  // Definition from ISA doc:
+  // (y & x) | (z & ~x)
+  def : Pat <
+    (or (and i32:$y, i32:$x), (and i32:$z, (not i32:$x))),
+    (BFI_INT $x, $y, $z)
+  >;
+
+  // SHA-256 Ch function
+  // z ^ (x & (y ^ z))
+  def : Pat <
+    (xor i32:$z, (and i32:$x, (xor i32:$y, i32:$z))),
+    (BFI_INT $x, $y, $z)
+  >;
+
+}
+
 include "R600Instructions.td"
 
 include "SIInstrInfo.td"
-- 
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