llvm/test/Transforms/ConstraintElimination/loops.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -constraint-elimination -S %s | FileCheck %s

; Make sure conditions in loops are not used to simplify themselves.

define void @loop1(float* %T, float* %x, i32 %points, i32 %trigint) {
; CHECK-LABEL: @loop1(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[IDX_EXT:%.*]] = sext i32 [[POINTS:%.*]] to i64
; CHECK-NEXT:    [[ADD_PTR:%.*]] = getelementptr inbounds float, float* [[X:%.*]], i64 [[IDX_EXT]]
; CHECK-NEXT:    [[ADD_PTR1:%.*]] = getelementptr inbounds float, float* [[ADD_PTR]], i64 -8
; CHECK-NEXT:    [[SHR:%.*]] = ashr i32 [[POINTS]], 1
; CHECK-NEXT:    [[IDX_EXT2:%.*]] = sext i32 [[SHR]] to i64
; CHECK-NEXT:    [[ADD_PTR3:%.*]] = getelementptr inbounds float, float* [[X]], i64 [[IDX_EXT2]]
; CHECK-NEXT:    [[ADD_PTR4:%.*]] = getelementptr inbounds float, float* [[ADD_PTR3]], i64 -8
; CHECK-NEXT:    br label [[DO_BODY:%.*]]
; CHECK:       do.body:
; CHECK-NEXT:    [[X2_0:%.*]] = phi float* [ [[ADD_PTR4]], [[ENTRY:%.*]] ], [ [[ADD_PTR106:%.*]], [[DO_BODY]] ]
; CHECK-NEXT:    [[X1_0:%.*]] = phi float* [ [[ADD_PTR1]], [[ENTRY]] ], [ [[ADD_PTR105:%.*]], [[DO_BODY]] ]
; CHECK-NEXT:    [[ADD_PTR105]] = getelementptr inbounds float, float* [[X1_0]], i64 -8
; CHECK-NEXT:    [[ADD_PTR106]] = getelementptr inbounds float, float* [[X2_0]], i64 -8
; CHECK-NEXT:    [[CMP:%.*]] = icmp uge float* [[ADD_PTR106]], [[X]]
; CHECK-NEXT:    br i1 [[CMP]], label [[DO_BODY]], label [[DO_END:%.*]]
; CHECK:       do.end:
; CHECK-NEXT:    ret void
;
entry:
  %idx.ext = sext i32 %points to i64
  %add.ptr = getelementptr inbounds float, float* %x, i64 %idx.ext
  %add.ptr1 = getelementptr inbounds float, float* %add.ptr, i64 -8
  %shr = ashr i32 %points, 1
  %idx.ext2 = sext i32 %shr to i64
  %add.ptr3 = getelementptr inbounds float, float* %x, i64 %idx.ext2
  %add.ptr4 = getelementptr inbounds float, float* %add.ptr3, i64 -8
  br label %do.body

do.body:                                          ; preds = %do.body, %entry
  %x2.0 = phi float* [ %add.ptr4, %entry ], [ %add.ptr106, %do.body ]
  %x1.0 = phi float* [ %add.ptr1, %entry ], [ %add.ptr105, %do.body ]
  %add.ptr105 = getelementptr inbounds float, float* %x1.0, i64 -8
  %add.ptr106 = getelementptr inbounds float, float* %x2.0, i64 -8
  %cmp = icmp uge float* %add.ptr106, %x
  br i1 %cmp, label %do.body, label %do.end

do.end:                                           ; preds = %do.body
  ret void
}