commit 87bcae366daf2cd690b2fc2711a7908be40b2bcf
author Nemanja Ivanovic <nemanja.i.ibm@gmail.com> Wed Apr 13 18:51:18 2016 +0000
committer Nemanja Ivanovic <nemanja.i.ibm@gmail.com> Wed Apr 13 18:51:18 2016 +0000
tree 439d911aabd48ea83e4d831609d880aca40213aa
parent 9df0720766597376d912d757a5e7a45ac2b816a2

[PowerPC] Basic support for P9 byte comparison and count trailing zero insns

This patch corresponds to review:
http://reviews.llvm.org/D17850

This patch implements the following instructions:
cmprb, cmpeqb, cnttzw, cnttzw., cnttzd, cnttzd.

llvm-svn: 266228

llvm/lib/Target/PowerPC/PPCInstr64Bit.td

diff --git a/llvm/lib/Target/PowerPC/PPCInstr64Bit.td b/llvm/lib/Target/PowerPC/PPCInstr64Bit.td
index 2d5506e..58ad91d 100644
--- a/llvm/lib/Target/PowerPC/PPCInstr64Bit.td
+++ b/llvm/lib/Target/PowerPC/PPCInstr64Bit.td
@@ -574,6 +574,14 @@
   def CMPLDI : DForm_6_ext<10, (outs crrc:$dst), (ins g8rc:$src1, u16imm64:$src2),
                            "cmpldi $dst, $src1, $src2",
                            IIC_IntCompare>, isPPC64;
+  let Interpretation64Bit = 1, isCodeGenOnly = 1 in
+  def CMPRB8 : X_BF3_L1_RS5_RS5<31, 192, (outs crbitrc:$BF),
+                                (ins u1imm:$L, g8rc:$rA, g8rc:$rB),
+                                "cmprb $BF, $L, $rA, $rB", IIC_IntCompare, []>,
+               Requires<[IsISA3_0]>;
+  def CMPEQB : X_BF3_RS5_RS5<31, 224, (outs crbitrc:$BF),
+                             (ins g8rc:$rA, g8rc:$rB), "cmpeqb $BF, $rA, $rB",
+                             IIC_IntCompare, []>, Requires<[IsISA3_0]>;
 }
 
 let hasSideEffects = 0 in {
@@ -590,6 +598,9 @@
 let Interpretation64Bit = 1, isCodeGenOnly = 1 in {
 defm CNTLZW8 : XForm_11r<31,  26, (outs g8rc:$rA), (ins g8rc:$rS),
                         "cntlzw", "$rA, $rS", IIC_IntGeneral, []>;
+defm CNTTZW8 : XForm_11r<31, 538, (outs g8rc:$rA), (ins g8rc:$rS),
+                        "cnttzw", "$rA, $rS", IIC_IntGeneral, []>,
+               Requires<[IsISA3_0]>;
 
 defm EXTSB8 : XForm_11r<31, 954, (outs g8rc:$rA), (ins g8rc:$rS),
                         "extsb", "$rA, $rS", IIC_IntSimple,
@@ -623,9 +634,12 @@
 defm SRADI  : XSForm_1rc<31, 413, (outs g8rc:$rA), (ins g8rc:$rS, u6imm:$SH),
                          "sradi", "$rA, $rS, $SH", IIC_IntRotateDI,
                          [(set i64:$rA, (sra i64:$rS, (i32 imm:$SH)))]>, isPPC64;
-defm CNTLZD : XForm_11r<31, 58, (outs g8rc:$rA), (ins g8rc:$rS),
+defm CNTLZD : XForm_11r<31,  58, (outs g8rc:$rA), (ins g8rc:$rS),
                         "cntlzd", "$rA, $rS", IIC_IntGeneral,
                         [(set i64:$rA, (ctlz i64:$rS))]>;
+defm CNTTZD : XForm_11r<31, 570, (outs g8rc:$rA), (ins g8rc:$rS),
+                        "cnttzd", "$rA, $rS", IIC_IntGeneral,
+                        [(set i64:$rA, (cttz i64:$rS))]>, Requires<[IsISA3_0]>;
 def POPCNTD : XForm_11<31, 506, (outs g8rc:$rA), (ins g8rc:$rS),
                        "popcntd $rA, $rS", IIC_IntGeneral,
                        [(set i64:$rA, (ctpop i64:$rS))]>;