add support for selecting bools

FIXME: this is commented out because it makes tblgen go a bit fruity

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25193 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/IA64/IA64InstrInfo.td b/lib/Target/IA64/IA64InstrInfo.td
index a38338ffca6f610f83eb4fcc63a5feb86fd8f712..27888185d66a1d3ce50ee9a6dc3331e67f814001 100644 (file)
--- a/lib/Target/IA64/IA64InstrInfo.td
+++ b/lib/Target/IA64/IA64InstrInfo.td
@@ -424,11 +424,15 @@ let isTwoAddress = 1 in {
     "($qp) mov $dst = $src;;">;
 }
 
-// TODO: select bools
 def SELECTINT : Pat<(select PR:$which, GR:$src1, GR:$src2),
           (CMOV (MOV GR:$src2), GR:$src1, PR:$which)>; // note order!
 def SELECTFP : Pat<(select PR:$which, FP:$src1, FP:$src2),
           (CFMOV (FMOV FP:$src2), FP:$src1, PR:$which)>; // note order!
+// TODO: can do this faster, w/o using any integer regs (see pattern isel)
+// FIXME: this makes tblgen cough and splutter:
+// Assertion && "Unknown node in result pattern!"'
+//def SELECTBOOL : Pat<(select PR:$which, PR:$src1, PR:$src2), // note order!
+//          (trunc (CMOV (MOV (zext PR:$src2)), (zext PR:$src1), PR:$which))>;
 
 // load constants of various sizes // FIXME: prettyprint -ve constants
 def : Pat<(i64 immSExt14:$imm), (ADDS r0, immSExt14:$imm)>;