Use predication instead of pseudo-opcodes when folding into MOVCC.

Now that it is possible to dynamically tie MachineInstr operands,
predicated instructions are possible in SSA form:

  %vreg3<def> = SUBri %vreg1, -2147483647, pred:14, pred:%noreg, %opt:%noreg
  %vreg4<def,tied1> = MOVCCr %vreg3<tied0>, %vreg1, %pred:12, pred:%CPSR

Becomes a predicated SUBri with a tied imp-use:

  SUBri %vreg1, -2147483647, pred:13, pred:%CPSR, opt:%noreg, %vreg1<imp-use,tied0>

This means that any instruction that is safe to move can be folded into
a MOVCC, and the *CC pseudo-instructions are no longer needed.

The test case changes reflect that Thumb2SizeReduce recognizes the
predicated instructions. It didn't understand the pseudos.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163274 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/ARM/select.ll

@@ -80,7 +80,7 @@ define double @f7(double %a, double %b) {
 ; CHECK-NEON:      adr     [[R2:r[0-9]+]], LCPI7_0
 ; CHECK-NEON-NEXT: cmp     r0, [[R3]]
 ; CHECK-NEON-NEXT: it      eq
-; CHECK-NEON-NEXT: addeq.w {{r.*}}, [[R2]]
+; CHECK-NEON-NEXT: addeq{{.*}} [[R2]], #4
 ; CHECK-NEON-NEXT: ldr
 ; CHECK-NEON:      bx
 

test/CodeGen/ARM/select_xform.ll

@@ -9,7 +9,7 @@ define i32 @t1(i32 %a, i32 %b, i32 %c) nounwind {
 
 ; T2: t1:
 ; T2: mvn r0, #-2147483648
-; T2: addle.w r1, r1
+; T2: addle r1, r0
 ; T2: mov r0, r1
   %tmp1 = icmp sgt i32 %c, 10
   %tmp2 = select i1 %tmp1, i32 0, i32 2147483647
@@ -23,7 +23,7 @@ define i32 @t2(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
 ; ARM: mov r0, r1
 
 ; T2: t2:
-; T2: suble.w r1, r1, #10
+; T2: suble r1, #10
 ; T2: mov r0, r1
   %tmp1 = icmp sgt i32 %c, 10
   %tmp2 = select i1 %tmp1, i32 0, i32 10
@@ -37,7 +37,7 @@ define i32 @t3(i32 %a, i32 %b, i32 %x, i32 %y) nounwind {
 ; ARM: mov r0, r3
 
 ; T2: t3:
-; T2: andge.w r3, r3, r2
+; T2: andge r3, r2
 ; T2: mov r0, r3
   %cond = icmp slt i32 %a, %b
   %z = select i1 %cond, i32 -1, i32 %x
@@ -51,7 +51,7 @@ define i32 @t4(i32 %a, i32 %b, i32 %x, i32 %y) nounwind {
 ; ARM: mov r0, r3
 
 ; T2: t4:
-; T2: orrge.w r3, r3, r2
+; T2: orrge r3, r2
 ; T2: mov r0, r3
   %cond = icmp slt i32 %a, %b
   %z = select i1 %cond, i32 0, i32 %x
@@ -81,7 +81,7 @@ define i32 @t6(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
 
 ; T2: t6:
 ; T2-NOT: movge
-; T2: eorlt.w r3, r3, r2
+; T2: eorlt r3, r2
   %cond = icmp slt i32 %a, %b
   %tmp1 = select i1 %cond, i32 %c, i32 0
   %tmp2 = xor i32 %tmp1, %d
@@ -200,7 +200,7 @@ entry:
 
 ; T2: t13
 ; T2: cmp r1, #10
-; T2: addgt.w r0, r0, #1
+; T2: addgt r0, #1
   %cmp = icmp sgt i32 %a, 10
   %conv = zext i1 %cmp to i32
   %add = add i32 %conv, %c
@@ -216,7 +216,7 @@ entry:
 
 ; T2: t14
 ; T2: cmp r1, #10
-; T2: subgt.w r0, r0, #1
+; T2: subgt r0, #1
   %cmp = icmp sgt i32 %a, 10
   %conv = sext i1 %cmp to i32
   %add = add i32 %conv, %c

test/CodeGen/Thumb2/thumb2-select_xform.ll

@@ -5,7 +5,7 @@ define i32 @t1(i32 %a, i32 %b, i32 %c) nounwind {
 ; CHECK: mvn r0, #-2147483648
 ; CHECK: cmp r2, #10
 ; CHECK: it  le
-; CHECK: addle.w r1, r1, r0
+; CHECK: addle r1, r0
 ; CHECK: mov r0, r1
         %tmp1 = icmp sgt i32 %c, 10
         %tmp2 = select i1 %tmp1, i32 0, i32 2147483647
@@ -30,7 +30,7 @@ define i32 @t3(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
 ; CHECK: t3
 ; CHECK: cmp r2, #10
 ; CHECK: it  le
-; CHECK: suble.w r1, r1, #10
+; CHECK: suble r1, #10
 ; CHECK: mov r0, r1
         %tmp1 = icmp sgt i32 %c, 10
         %tmp2 = select i1 %tmp1, i32 0, i32 10