[llvm] r193941 - [SparcV9] Add ctpop instruction for i64. Also, expand ctlz, cttz and bswap.

[Venkatraman Govindaraju]

Author: venkatra
Date: Sun Nov  3 00:59:07 2013
New Revision: 193941

URL: http://llvm.org/viewvc/llvm-project?rev=193941&view=rev
Log:
[SparcV9] Add ctpop instruction for i64.  Also, expand ctlz, cttz and bswap.

Modified:
    llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
    llvm/trunk/lib/Target/Sparc/SparcInstr64Bit.td
    llvm/trunk/test/CodeGen/SPARC/64bit.ll

Modified: llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp?rev=193941&r1=193940&r2=193941&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp Sun Nov  3 00:59:07 2013
@@ -1397,6 +1397,13 @@ SparcTargetLowering::SparcTargetLowering
     setOperationAction(ISD::SETCC, MVT::i64, Expand);
     setOperationAction(ISD::BR_CC, MVT::i64, Custom);
     setOperationAction(ISD::SELECT_CC, MVT::i64, Custom);
+
+    setOperationAction(ISD::CTPOP, MVT::i64, Legal);
+    setOperationAction(ISD::CTTZ , MVT::i64, Expand);
+    setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand);
+    setOperationAction(ISD::CTLZ , MVT::i64, Expand);
+    setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand);
+    setOperationAction(ISD::BSWAP, MVT::i64, Expand);
   }
 
   // FIXME: There are instructions available for ATOMIC_FENCE

Modified: llvm/trunk/lib/Target/Sparc/SparcInstr64Bit.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcInstr64Bit.td?rev=193941&r1=193940&r2=193941&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcInstr64Bit.td (original)
+++ llvm/trunk/lib/Target/Sparc/SparcInstr64Bit.td Sun Nov  3 00:59:07 2013
@@ -169,6 +169,8 @@ def : Pat<(sub i64:$a, (i64 simm13:$b)),
 
 def : Pat<(SPcmpicc i64:$a, (i64 simm13:$b)), (CMPri $a, (as_i32imm $b))>;
 
+def : Pat<(ctpop i64:$src), (POPCrr $src)>;
+
 } // Predicates = [Is64Bit]
 
 

Modified: llvm/trunk/test/CodeGen/SPARC/64bit.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/SPARC/64bit.ll?rev=193941&r1=193940&r2=193941&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/SPARC/64bit.ll (original)
+++ llvm/trunk/test/CodeGen/SPARC/64bit.ll Sun Nov  3 00:59:07 2013
@@ -285,3 +285,26 @@ entry:
   store i64 0, i64* %0, align 8
   ret i64 0
 }
+
+; CHECK-LABEL: bit_ops
+; CHECK:       popc
+
+; OPT-LABEL: bit_ops
+; OPT:       popc
+
+define i64 @bit_ops(i64 %arg) {
+entry:
+  %0 = tail call i64 @llvm.ctpop.i64(i64 %arg)
+  %1 = tail call i64 @llvm.ctlz.i64(i64 %arg, i1 true)
+  %2 = tail call i64 @llvm.cttz.i64(i64 %arg, i1 true)
+  %3 = tail call i64 @llvm.bswap.i64(i64 %arg)
+  %4 = add i64 %0, %1
+  %5 = add i64 %2, %3
+  %6 = add i64 %4, %5
+  ret i64 %6
+}
+
+declare i64 @llvm.ctpop.i64(i64) nounwind readnone
+declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone
+declare i64 @llvm.cttz.i64(i64, i1) nounwind readnone
+declare i64 @llvm.bswap.i64(i64) nounwind readnone