Unverified Commit c73d5544 authored by Yingwei Zheng's avatar Yingwei Zheng
Browse files

[CVP] Add additional cttz tests. NFC.

parent 6989c484

llvm/test/Transforms/CorrelatedValuePropagation/range.ll

+27 −4
Original line number Diff line number Diff line
@@ -1033,13 +1033,13 @@ else: 
  ret i1 false

}



define i1 @cttz_nofold(i16 %x) {

; CHECK-LABEL: @cttz_nofold(

define i1 @cttz_nofold1(i16 %x) {

; CHECK-LABEL: @cttz_nofold1(

; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i16 [[X:%.*]], 256

; CHECK-NEXT:    br i1 [[CMP]], label [[IF:%.*]], label [[ELSE:%.*]]

; CHECK:       if:

; CHECK-NEXT:    [[CTTZ:%.*]] = call i16 @llvm.cttz.i16(i16 [[X]], i1 true)

; CHECK-NEXT:    [[RES:%.*]] = icmp uge i16 [[CTTZ]], 9

; CHECK-NEXT:    [[RES:%.*]] = icmp uge i16 [[CTTZ]], 7

; CHECK-NEXT:    ret i1 [[RES]]

; CHECK:       else:

; CHECK-NEXT:    ret i1 false
@@ -1049,7 +1049,30 @@ define i1 @cttz_nofold(i16 %x) { 


if:

  %cttz = call i16 @llvm.cttz.i16(i16 %x, i1 true)

  %res = icmp uge i16 %cttz, 9

  %res = icmp uge i16 %cttz, 7

  ret i1 %res



else:

  ret i1 false

}



define i1 @cttz_nofold2(i16 %x) {

; CHECK-LABEL: @cttz_nofold2(

; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i16 [[X:%.*]], 256

; CHECK-NEXT:    br i1 [[CMP]], label [[IF:%.*]], label [[ELSE:%.*]]

; CHECK:       if:

; CHECK-NEXT:    [[CTTZ:%.*]] = call i16 @llvm.cttz.i16(i16 [[X]], i1 false)

; CHECK-NEXT:    [[RES:%.*]] = icmp uge i16 [[CTTZ]], 8

; CHECK-NEXT:    ret i1 [[RES]]

; CHECK:       else:

; CHECK-NEXT:    ret i1 false

;

  %cmp = icmp ult i16 %x, 256

  br i1 %cmp, label %if, label %else



if:

  %cttz = call i16 @llvm.cttz.i16(i16 %x, i1 false)

  %res = icmp uge i16 %cttz, 8

  ret i1 %res



else: