select_xform.ll   [plain text]

; RUN: llc < %s -mtriple=arm-apple-darwin -mcpu=cortex-a8 | FileCheck %s -check-prefix=ARM
; RUN: llc < %s -mtriple=thumb-apple-darwin -mcpu=cortex-a8 | FileCheck %s -check-prefix=T2
; rdar://8662825

define i32 @t1(i32 %a, i32 %b, i32 %c) nounwind {
; ARM: t1:
; ARM: suble r1, r1, #-2147483647
; ARM: mov r0, r1

; T2: t1:
; T2: mvn r0, #-2147483648
; T2: addle r1, r0
; T2: mov r0, r1
  %tmp1 = icmp sgt i32 %c, 10
  %tmp2 = select i1 %tmp1, i32 0, i32 2147483647
  %tmp3 = add i32 %tmp2, %b
  ret i32 %tmp3
}

define i32 @t2(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
; ARM: t2:
; ARM: suble r1, r1, #10
; ARM: mov r0, r1

; T2: t2:
; T2: suble r1, #10
; T2: mov r0, r1
  %tmp1 = icmp sgt i32 %c, 10
  %tmp2 = select i1 %tmp1, i32 0, i32 10
  %tmp3 = sub i32 %b, %tmp2
  ret i32 %tmp3
}

define i32 @t3(i32 %a, i32 %b, i32 %x, i32 %y) nounwind {
; ARM: t3:
; ARM: andge r3, r3, r2
; ARM: mov r0, r3

; T2: t3:
; T2: andge r3, r2
; T2: mov r0, r3
  %cond = icmp slt i32 %a, %b
  %z = select i1 %cond, i32 -1, i32 %x
  %s = and i32 %z, %y
 ret i32 %s
}

define i32 @t4(i32 %a, i32 %b, i32 %x, i32 %y) nounwind {
; ARM: t4:
; ARM: orrge r3, r3, r2
; ARM: mov r0, r3

; T2: t4:
; T2: orrge r3, r2
; T2: mov r0, r3
  %cond = icmp slt i32 %a, %b
  %z = select i1 %cond, i32 0, i32 %x
  %s = or i32 %z, %y
 ret i32 %s
}

define i32 @t5(i32 %a, i32 %b, i32 %c) nounwind {
entry:
; ARM: t5:
; ARM-NOT: moveq
; ARM: orreq r2, r2, #1

; T2: t5:
; T2-NOT: moveq
; T2: orreq r2, r2, #1
  %tmp1 = icmp eq i32 %a, %b
  %tmp2 = zext i1 %tmp1 to i32
  %tmp3 = or i32 %tmp2, %c
  ret i32 %tmp3
}

define i32 @t6(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
; ARM: t6:
; ARM-NOT: movge
; ARM: eorlt r3, r3, r2

; T2: t6:
; T2-NOT: movge
; T2: eorlt r3, r2
  %cond = icmp slt i32 %a, %b
  %tmp1 = select i1 %cond, i32 %c, i32 0
  %tmp2 = xor i32 %tmp1, %d
  ret i32 %tmp2
}

define i32 @t7(i32 %a, i32 %b, i32 %c) nounwind {
entry:
; ARM: t7:
; ARM-NOT: lsleq
; ARM: andeq r2, r2, r2, lsl #1

; T2: t7:
; T2-NOT: lsleq.w
; T2: andeq.w r2, r2, r2, lsl #1
  %tmp1 = shl i32 %c, 1
  %cond = icmp eq i32 %a, %b
  %tmp2 = select i1 %cond, i32 %tmp1, i32 -1
  %tmp3 = and i32 %c, %tmp2
  ret i32 %tmp3
}

; Fold ORRri into movcc.
define i32 @t8(i32 %a, i32 %b) nounwind {
; ARM: t8:
; ARM: cmp r0, r1
; ARM: orrge r0, r1, #1

; T2: t8:
; T2: cmp r0, r1
; T2: orrge r0, r1, #1
  %x = or i32 %b, 1
  %cond = icmp slt i32 %a, %b
  %tmp1 = select i1 %cond, i32 %a, i32 %x
  ret i32 %tmp1
}

; Fold ANDrr into movcc.
define i32 @t9(i32 %a, i32 %b, i32 %c) nounwind {
; ARM: t9:
; ARM: cmp r0, r1
; ARM: andge r0, r1, r2

; T2: t9:
; T2: cmp r0, r1
; T2: andge.w r0, r1, r2
  %x = and i32 %b, %c
  %cond = icmp slt i32 %a, %b
  %tmp1 = select i1 %cond, i32 %a, i32 %x
  ret i32 %tmp1
}

; Fold EORrs into movcc.
define i32 @t10(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
; ARM: t10:
; ARM: cmp r0, r1
; ARM: eorge r0, r1, r2, lsl #7

; T2: t10:
; T2: cmp r0, r1
; T2: eorge.w r0, r1, r2, lsl #7
  %s = shl i32 %c, 7
  %x = xor i32 %b, %s
  %cond = icmp slt i32 %a, %b
  %tmp1 = select i1 %cond, i32 %a, i32 %x
  ret i32 %tmp1
}

; Fold ORRri into movcc, reversing the condition.
define i32 @t11(i32 %a, i32 %b) nounwind {
; ARM: t11:
; ARM: cmp r0, r1
; ARM: orrlt r0, r1, #1

; T2: t11:
; T2: cmp r0, r1
; T2: orrlt r0, r1, #1
  %x = or i32 %b, 1
  %cond = icmp slt i32 %a, %b
  %tmp1 = select i1 %cond, i32 %x, i32 %a
  ret i32 %tmp1
}

; Fold ADDri12 into movcc
define i32 @t12(i32 %a, i32 %b) nounwind {
; ARM: t12:
; ARM: cmp r0, r1
; ARM: addge r0, r1,

; T2: t12:
; T2: cmp r0, r1
; T2: addwge r0, r1, #3000
  %x = add i32 %b, 3000
  %cond = icmp slt i32 %a, %b
  %tmp1 = select i1 %cond, i32 %a, i32 %x
  ret i32 %tmp1
}

; Handle frame index operands.
define void @pr13628() nounwind uwtable align 2 {
  %x3 = alloca i8, i32 256, align 8
  %x4 = load i8* undef, align 1
  %x5 = icmp ne i8 %x4, 0
  %x6 = select i1 %x5, i8* %x3, i8* null
  call void @bar(i8* %x6) nounwind
  ret void
}
declare void @bar(i8*)

; Fold zext i1 into predicated add
define i32 @t13(i32 %c, i32 %a) nounwind readnone ssp {
entry:
; ARM: t13
; ARM: cmp r1, #10
; ARM: addgt r0, r0, #1

; T2: t13
; T2: cmp r1, #10
; T2: addgt r0, #1
  %cmp = icmp sgt i32 %a, 10
  %conv = zext i1 %cmp to i32
  %add = add i32 %conv, %c
  ret i32 %add
}

; Fold sext i1 into predicated sub
define i32 @t14(i32 %c, i32 %a) nounwind readnone ssp {
entry:
; ARM: t14
; ARM: cmp r1, #10
; ARM: subgt r0, r0, #1

; T2: t14
; T2: cmp r1, #10
; T2: subgt r0, #1
  %cmp = icmp sgt i32 %a, 10
  %conv = sext i1 %cmp to i32
  %add = add i32 %conv, %c
  ret i32 %add
}