Don't use a potentially expensive shift if all we want is one set bit.

[oota-llvm.git] / lib / Target / R600 / AMDGPUInstructions.td

diff --git a/lib/Target/R600/AMDGPUInstructions.td b/lib/Target/R600/AMDGPUInstructions.td
index 83e1359950da5caf667962854f04143027dd93bb..234bb994f373e3392f56ef5de350d4c2de8a42fe 100644 (file)
--- a/lib/Target/R600/AMDGPUInstructions.td
+++ b/lib/Target/R600/AMDGPUInstructions.td
@@ -90,6 +90,19 @@ def zextloadi8_global : PatFrag<(ops node:$ptr), (zextloadi8 node:$ptr), [{
     return isGlobalLoad(dyn_cast<LoadSDNode>(N));
 }]>;
 
+def zextloadi8_constant : PatFrag<(ops node:$ptr), (zextloadi8 node:$ptr), [{
+    return isGlobalLoad(dyn_cast<LoadSDNode>(N));
+}]>;
+
+def local_load : PatFrag<(ops node:$ptr), (load node:$ptr), [{
+    return isLocalLoad(dyn_cast<LoadSDNode>(N));
+}]>;
+
+def local_store : PatFrag<(ops node:$val, node:$ptr),
+                             (store node:$val, node:$ptr), [{
+    return isLocalStore(dyn_cast<StoreSDNode>(N));
+}]>;
+
 class Constants {
 int TWO_PI = 0x40c90fdb;
 int PI = 0x40490fdb;
@@ -276,6 +289,31 @@ multiclass BFIPatterns <Instruction BFI_INT> {
 
 }
 
+// SHA-256 Ma patterns
+
+// ((x & z) | (y & (x | z))) -> BFI_INT (XOR x, y), z, y
+class SHA256MaPattern <Instruction BFI_INT, Instruction XOR> : Pat <
+  (or (and i32:$x, i32:$z), (and i32:$y, (or i32:$x, i32:$z))),
+  (BFI_INT (XOR i32:$x, i32:$y), i32:$z, i32:$y)
+>;
+
+// Bitfield extract patterns
+
+def legalshift32 : ImmLeaf <i32, [{return Imm >=0 && Imm < 32;}]>;
+def bfemask : PatLeaf <(imm), [{return isMask_32(N->getZExtValue());}],
+                            SDNodeXForm<imm, [{ return CurDAG->getTargetConstant(CountTrailingOnes_32(N->getZExtValue()), MVT::i32);}]>>;
+
+class BFEPattern <Instruction BFE> : Pat <
+  (and (srl i32:$x, legalshift32:$y), bfemask:$z),
+  (BFE $x, $y, $z)
+>;
+
+// rotr pattern
+class ROTRPattern <Instruction BIT_ALIGN> : Pat <
+  (rotr i32:$src0, i32:$src1),
+  (BIT_ALIGN $src0, $src0, $src1)
+>;
+
 include "R600Instructions.td"
 
 include "SIInstrInfo.td"