llvm/test/Analysis/ScalarEvolution/pr46786.ll

; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution | FileCheck %s
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s

source_filename = "input.cpp"
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"

; Function Attrs: nofree
define i8* @FSE_decompress_usingDTable(i8* %arg, i32 %arg1, i32 %arg2, i32 %arg3) local_unnamed_addr #0 {
; CHECK-LABEL: 'FSE_decompress_usingDTable'
; CHECK-NEXT:  Classifying expressions for: @FSE_decompress_usingDTable
; CHECK-NEXT:    %i = getelementptr inbounds i8, i8* %arg, i32 %arg2
; CHECK-NEXT:    --> (%arg2 + %arg) U: full-set S: full-set
; CHECK-NEXT:    %i4 = sub nsw i32 0, %arg1
; CHECK-NEXT:    --> (-1 * %arg1) U: full-set S: full-set
; CHECK-NEXT:    %i5 = getelementptr inbounds i8, i8* %i, i32 %i4
; CHECK-NEXT:    --> ((-1 * %arg1) + %arg2 + %arg) U: full-set S: full-set
; CHECK-NEXT:    %i7 = select i1 %i6, i32 %arg2, i32 %arg1
; CHECK-NEXT:    --> ((-1 * %arg) + (((-1 * %arg1) + %arg2 + %arg) umin %arg) + %arg1) U: full-set S: full-set
; CHECK-NEXT:    %i8 = sub i32 %arg3, %i7
; CHECK-NEXT:    --> ((-1 * (((-1 * %arg1) + %arg2 + %arg) umin %arg)) + (-1 * %arg1) + %arg3 + %arg) U: full-set S: full-set
; CHECK-NEXT:    %i9 = getelementptr inbounds i8, i8* %arg, i32 %i8
; CHECK-NEXT:    --> ((2 * %arg) + (-1 * (((-1 * %arg1) + %arg2 + %arg) umin %arg)) + (-1 * %arg1) + %arg3) U: full-set S: full-set
; CHECK-NEXT:  Determining loop execution counts for: @FSE_decompress_usingDTable
;
bb:
  %i = getelementptr inbounds i8, i8* %arg, i32 %arg2
  %i4 = sub nsw i32 0, %arg1
  %i5 = getelementptr inbounds i8, i8* %i, i32 %i4
  %i6 = icmp ult i8* %i5, %arg
  %i7 = select i1 %i6, i32 %arg2, i32 %arg1
  %i8 = sub i32 %arg3, %i7
  %i9 = getelementptr inbounds i8, i8* %arg, i32 %i8
  ret i8* %i9
}

define i8* @test_01(i8* %p) {
; CHECK-LABEL: 'test_01'
; CHECK-NEXT:  Classifying expressions for: @test_01
; CHECK-NEXT:    %p1 = getelementptr i8, i8* %p, i32 2
; CHECK-NEXT:    --> (2 + %p) U: full-set S: full-set
; CHECK-NEXT:    %p2 = getelementptr i8, i8* %p, i32 1
; CHECK-NEXT:    --> (1 + %p) U: full-set S: full-set
; CHECK-NEXT:    %index = select i1 %cmp, i32 2, i32 1
; CHECK-NEXT:    --> ((-1 * %p) + ((1 + %p) umax (2 + %p))) U: full-set S: full-set
; CHECK-NEXT:    %neg_index = sub i32 0, %index
; CHECK-NEXT:    --> ((-1 * ((1 + %p) umax (2 + %p))) + %p) U: full-set S: full-set
; CHECK-NEXT:    %gep = getelementptr i8, i8* %p, i32 %neg_index
; CHECK-NEXT:    --> ((2 * %p) + (-1 * ((1 + %p) umax (2 + %p)))) U: full-set S: full-set
; CHECK-NEXT:  Determining loop execution counts for: @test_01
;
  %p1 = getelementptr i8, i8* %p, i32 2
  %p2 = getelementptr i8, i8* %p, i32 1
  %cmp = icmp ugt i8* %p1, %p2
  %index = select i1 %cmp, i32 2, i32 1
  %neg_index = sub i32 0, %index
  %gep = getelementptr i8, i8* %p, i32 %neg_index
  ret i8* %gep
}

define i8* @test_02(i8* %p) {
; CHECK-LABEL: 'test_02'
; CHECK-NEXT:  Classifying expressions for: @test_02
; CHECK-NEXT:    %p1 = getelementptr i8, i8* %p, i32 2
; CHECK-NEXT:    --> (2 + %p) U: full-set S: full-set
; CHECK-NEXT:    %p2 = getelementptr i8, i8* %p, i32 1
; CHECK-NEXT:    --> (1 + %p) U: full-set S: full-set
; CHECK-NEXT:    %index = select i1 %cmp, i32 2, i32 1
; CHECK-NEXT:    --> ((-1 * %p) + ((1 + %p) smax (2 + %p))) U: full-set S: full-set
; CHECK-NEXT:    %neg_index = sub i32 0, %index
; CHECK-NEXT:    --> ((-1 * ((1 + %p) smax (2 + %p))) + %p) U: full-set S: full-set
; CHECK-NEXT:    %gep = getelementptr i8, i8* %p, i32 %neg_index
; CHECK-NEXT:    --> ((2 * %p) + (-1 * ((1 + %p) smax (2 + %p)))) U: full-set S: full-set
; CHECK-NEXT:  Determining loop execution counts for: @test_02
;
  %p1 = getelementptr i8, i8* %p, i32 2
  %p2 = getelementptr i8, i8* %p, i32 1
  %cmp = icmp sgt i8* %p1, %p2
  %index = select i1 %cmp, i32 2, i32 1
  %neg_index = sub i32 0, %index
  %gep = getelementptr i8, i8* %p, i32 %neg_index
  ret i8* %gep
}

define i8* @test_03(i8* %p) {
; CHECK-LABEL: 'test_03'
; CHECK-NEXT:  Classifying expressions for: @test_03
; CHECK-NEXT:    %p1 = getelementptr i8, i8* %p, i32 2
; CHECK-NEXT:    --> (2 + %p) U: full-set S: full-set
; CHECK-NEXT:    %p2 = getelementptr i8, i8* %p, i32 1
; CHECK-NEXT:    --> (1 + %p) U: full-set S: full-set
; CHECK-NEXT:    %index = select i1 %cmp, i32 2, i32 1
; CHECK-NEXT:    --> ((-1 * %p) + ((1 + %p) umin (2 + %p))) U: full-set S: full-set
; CHECK-NEXT:    %neg_index = sub i32 0, %index
; CHECK-NEXT:    --> ((-1 * ((1 + %p) umin (2 + %p))) + %p) U: full-set S: full-set
; CHECK-NEXT:    %gep = getelementptr i8, i8* %p, i32 %neg_index
; CHECK-NEXT:    --> ((2 * %p) + (-1 * ((1 + %p) umin (2 + %p)))) U: full-set S: full-set
; CHECK-NEXT:  Determining loop execution counts for: @test_03
;
  %p1 = getelementptr i8, i8* %p, i32 2
  %p2 = getelementptr i8, i8* %p, i32 1
  %cmp = icmp ult i8* %p1, %p2
  %index = select i1 %cmp, i32 2, i32 1
  %neg_index = sub i32 0, %index
  %gep = getelementptr i8, i8* %p, i32 %neg_index
  ret i8* %gep
}

define i8* @test_04(i8* %p) {
; CHECK-LABEL: 'test_04'
; CHECK-NEXT:  Classifying expressions for: @test_04
; CHECK-NEXT:    %p1 = getelementptr i8, i8* %p, i32 2
; CHECK-NEXT:    --> (2 + %p) U: full-set S: full-set
; CHECK-NEXT:    %p2 = getelementptr i8, i8* %p, i32 1
; CHECK-NEXT:    --> (1 + %p) U: full-set S: full-set
; CHECK-NEXT:    %index = select i1 %cmp, i32 2, i32 1
; CHECK-NEXT:    --> ((-1 * %p) + ((1 + %p) smin (2 + %p))) U: full-set S: full-set
; CHECK-NEXT:    %neg_index = sub i32 0, %index
; CHECK-NEXT:    --> ((-1 * ((1 + %p) smin (2 + %p))) + %p) U: full-set S: full-set
; CHECK-NEXT:    %gep = getelementptr i8, i8* %p, i32 %neg_index
; CHECK-NEXT:    --> ((2 * %p) + (-1 * ((1 + %p) smin (2 + %p)))) U: full-set S: full-set
; CHECK-NEXT:  Determining loop execution counts for: @test_04
;
  %p1 = getelementptr i8, i8* %p, i32 2
  %p2 = getelementptr i8, i8* %p, i32 1
  %cmp = icmp slt i8* %p1, %p2
  %index = select i1 %cmp, i32 2, i32 1
  %neg_index = sub i32 0, %index
  %gep = getelementptr i8, i8* %p, i32 %neg_index
  ret i8* %gep
}

attributes #0 = { nofree }