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This removes TODO added in http://reviews.llvm.org/D3658

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The patch transforms

ABS(NABS(X)) -> ABS(X)
NABS(ABS(X)) -> NABS(X)

Differential Revision: http://reviews.llvm.org/D4040



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210782 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dinesh Dwivedi 2014-06-12 14:06:00 +00:00
parent 7554a4abd2
commit 7edfaf7148
2 changed files with 489 additions and 2 deletions
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11
lib/Transforms/InstCombine/InstCombineSelect.cpp
View File

@ -733,8 +733,15 @@ Instruction *InstCombiner::FoldSPFofSPF(Instruction *Inner,
return ReplaceInstUsesWith(Outer, Inner);
}
// TODO: ABS(NABS(X)) -> ABS(X)
// TODO: NABS(ABS(X)) -> NABS(X)
// ABS(NABS(X)) -> ABS(X)
// NABS(ABS(X)) -> NABS(X)
if ((SPF1 == SPF_ABS && SPF2 == SPF_NABS) ||
(SPF1 == SPF_NABS && SPF2 == SPF_ABS)) {
SelectInst *SI = cast<SelectInst>(Inner);
Value *NewSI = Builder->CreateSelect(
SI->getCondition(), SI->getFalseValue(), SI->getTrueValue());
return ReplaceInstUsesWith(Outer, NewSI);
}
return nullptr;
}

480
test/Transforms/InstCombine/abs_abs.ll
View File

@ -479,3 +479,483 @@ define i32 @nabs_nabs_x16(i32 %x) {
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x01(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, -1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x01(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x02(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, -1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x02(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x03(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, -1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x03(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x04(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, -1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x04(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x05(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x05(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x06(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x06(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x07(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x07(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x08(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x08(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x09(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x09(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x10(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x10(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x11(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x11(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x12(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x12(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x13(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x13(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x14(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x14(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x15(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x15(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @abs_nabs_x16(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @abs_nabs_x16(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x01(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, -1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x01(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x02(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, -1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x02(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x03(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, -1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x03(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x04(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, -1
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x04(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x05(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x05(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x06(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp sgt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x06(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x07(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x07(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x08(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp sgt i32 %cond, 0
%sub9 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %sub9, i32 %cond
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x08(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x09(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x09(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x10(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x10(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x11(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x11(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x12(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 0
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x12(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x13(i32 %x) {
%cmp = icmp sgt i32 %x, -1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x13(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x14(i32 %x) {
%cmp = icmp sgt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %x, i32 %sub
%cmp1 = icmp slt i32 %cond, 1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x14(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 [[NEG]], i32 %x
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x15(i32 %x) {
%cmp = icmp slt i32 %x, 0
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x15(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 0
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}
define i32 @nabs_abs_x16(i32 %x) {
%cmp = icmp slt i32 %x, 1
%sub = sub nsw i32 0, %x
%cond = select i1 %cmp, i32 %sub, i32 %x
%cmp1 = icmp slt i32 %cond, 1
%sub16 = sub nsw i32 0, %cond
%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
ret i32 %cond18
; CHECK-LABEL: @nabs_abs_x16(
; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp slt i32 %x, 1
; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]]
; CHECK-NEXT: ret i32 [[SEL]]
}