test/Transforms/IROutliner/outlining-larger-size-commutative.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -p iroutliner,verify -ir-outlining-no-cost < %s | FileCheck %s

; This test checks that commutative instructions where the operands are
; swapped are outlined as the same function.

; It also checks that non-commutative instructions outlined as different
; functions when the operands are swapped;

; These are identical functions, except that in the flipped functions,
; the operands in the adds are commuted.  However, since add instructions
; are commutative, we should still outline from all four as the same
; instruction.

define void @function1(i32 %a, i32 %b) {
; CHECK-LABEL: @function1(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[BLOCK_1:%.*]]
; CHECK:       block_0:
; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[TMP1:%.*]] = add i32 [[TMP4:%.*]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = add i32 [[TMP0]], [[TMP0]]
; CHECK-NEXT:    [[TMP3:%.*]] = icmp sgt i32 [[TMP0]], [[TMP0]]
; CHECK-NEXT:    br i1 [[TMP3]], label [[BLOCK_1]], label [[BLOCK_2:%.*]]
; CHECK:       block_1:
; CHECK-NEXT:    [[TMP4]] = phi i32 [ [[TMP1]], [[BLOCK_0:%.*]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    call void @outlined_ir_func_0(i32 [[B]])
; CHECK-NEXT:    br label [[BLOCK_0]]
; CHECK:       block_2:
; CHECK-NEXT:    [[TMP5:%.*]] = add i32 [[TMP2]], [[TMP2]]
; CHECK-NEXT:    ret void
;
entry:
  br label %block_1

block_0:
  %0 = add i32 %a, %b
  %1 = add i32 %4, 1
  %2 = add i32 %0, %0
  %3 = icmp sgt i32 %0, %0
  br i1 %3, label %block_1, label %block_2

block_1:
  %4 = phi i32 [ %1, %block_0 ], [ 0, %entry ]
  %5 = add i32 %b, %b
  br label %block_0

block_2:
  %6 = add i32 %2, %2
  ret void
}

define void @function2(i32 %a, i32 %b) {
; CHECK-LABEL: @function2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[BLOCK_1:%.*]]
; CHECK:       block_0:
; CHECK-NEXT:    [[TMP0:%.*]] = sub i32 [[A:%.*]], [[B:%.*]]
; CHECK-NEXT:    [[TMP1:%.*]] = add i32 1, [[TMP4:%.*]]
; CHECK-NEXT:    [[TMP2:%.*]] = add i32 [[TMP0]], [[TMP0]]
; CHECK-NEXT:    [[TMP3:%.*]] = icmp sgt i32 [[TMP0]], [[TMP0]]
; CHECK-NEXT:    br i1 [[TMP3]], label [[BLOCK_1]], label [[BLOCK_2:%.*]]
; CHECK:       block_1:
; CHECK-NEXT:    [[TMP4]] = phi i32 [ [[TMP1]], [[BLOCK_0:%.*]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    call void @outlined_ir_func_0(i32 [[B]])
; CHECK-NEXT:    br label [[BLOCK_0]]
; CHECK:       block_2:
; CHECK-NEXT:    [[TMP5:%.*]] = sub i32 [[TMP2]], [[TMP2]]
; CHECK-NEXT:    ret void
;
entry:
  br label %block_1

block_0:
  %0 = sub i32 %a, %b
  %1 = add i32 1, %4
  %2 = add i32 %0, %0
  %3 = icmp sgt i32 %0, %0
  br i1 %3, label %block_1, label %block_2

block_1:
  %4 = phi i32 [ %1, %block_0 ], [ 0, %entry ]
  %5 = add i32 %b, %b
  br label %block_0

block_2:
  %6 = sub i32 %2, %2
  ret void
}