[llvm] r175783 - Hexagon: Expand cttz, ctlz, and ctpop for now.

[Anshuman Dasgupta]

Author: adasgupt
Date: Thu Feb 21 13:39:40 2013
New Revision: 175783

URL: http://llvm.org/viewvc/llvm-project?rev=175783&view=rev
Log:
Hexagon: Expand cttz, ctlz, and ctpop for now.

Added:
    llvm/trunk/test/CodeGen/Hexagon/ctlz-cttz-ctpop.ll
Modified:
    llvm/trunk/lib/Target/Hexagon/HexagonISelLowering.cpp

Modified: llvm/trunk/lib/Target/Hexagon/HexagonISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonISelLowering.cpp?rev=175783&r1=175782&r2=175783&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Hexagon/HexagonISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/Hexagon/HexagonISelLowering.cpp Thu Feb 21 13:39:40 2013
@@ -1366,10 +1366,15 @@ HexagonTargetLowering::HexagonTargetLowe
     setOperationAction(ISD::FSINCOS, MVT::f64, Expand);
     setOperationAction(ISD::FSINCOS, MVT::f32, Expand);
     setOperationAction(ISD::CTPOP, MVT::i32, Expand);
+    setOperationAction(ISD::CTPOP, MVT::i64, Expand);
     setOperationAction(ISD::CTTZ , MVT::i32, Expand);
+    setOperationAction(ISD::CTTZ , MVT::i64, Expand);
     setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
+    setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand);
     setOperationAction(ISD::CTLZ , MVT::i32, Expand);
+    setOperationAction(ISD::CTLZ , MVT::i64, Expand);
     setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
+    setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand);
     setOperationAction(ISD::ROTL , MVT::i32, Expand);
     setOperationAction(ISD::ROTR , MVT::i32, Expand);
     setOperationAction(ISD::BSWAP, MVT::i32, Expand);

Added: llvm/trunk/test/CodeGen/Hexagon/ctlz-cttz-ctpop.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/Hexagon/ctlz-cttz-ctpop.ll?rev=175783&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/Hexagon/ctlz-cttz-ctpop.ll (added)
+++ llvm/trunk/test/CodeGen/Hexagon/ctlz-cttz-ctpop.ll Thu Feb 21 13:39:40 2013
@@ -0,0 +1,34 @@
+; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
+
+; CHECK: r{{[0-9]+}}:{{[0-9]+}} |= lsr(r{{[0-9]+}}:{{[0-9]+}}, #4)
+; CHECK: r{{[0-9]+}}:{{[0-9]+}} &= lsr(r{{[0-9]+}}:{{[0-9]+}}, #2)
+; CHECK: r{{[0-9]+}} += lsr(r{{[0-9]+}}, #4)
+
+define i32 @foo(i64 %a, i32 %b) nounwind  {
+entry:
+        %tmp0 = tail call i64 @llvm.ctlz.i64( i64 %a, i1 true )
+        %tmp1 = tail call i64 @llvm.cttz.i64( i64 %a, i1 true )
+        %tmp2 = tail call i32 @llvm.ctlz.i32( i32 %b, i1 true )
+        %tmp3 = tail call i32 @llvm.cttz.i32( i32 %b, i1 true )
+        %tmp4 = tail call i64 @llvm.ctpop.i64( i64 %a )
+        %tmp5 = tail call i32 @llvm.ctpop.i32( i32 %b )
+
+
+        %tmp6 = trunc i64 %tmp0 to i32
+        %tmp7 = trunc i64 %tmp1 to i32
+        %tmp8 = trunc i64 %tmp4 to i32
+        %tmp9 = add i32 %tmp6, %tmp7
+        %tmp10 = add i32 %tmp9, %tmp8
+        %tmp11 = add i32 %tmp10, %tmp2
+        %tmp12 = add i32 %tmp11, %tmp3
+        %tmp13 = add i32 %tmp12, %tmp5
+
+        ret i32 %tmp13
+}
+
+declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone
+declare i32 @llvm.ctlz.i32(i32, i1) nounwind readnone
+declare i64 @llvm.cttz.i64(i64, i1) nounwind readnone
+declare i32 @llvm.cttz.i32(i32, i1) nounwind readnone
+declare i64 @llvm.ctpop.i64(i64) nounwind readnone
+declare i32 @llvm.ctpop.i32(i32) nounwind readnone