test/Transforms/InstCombine/sub-sext-add.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

define i64 @src_2add_2sext_sub_1(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_1(
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_2(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_2(
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %z, %x
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_3(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_3(
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %y, %x
  %add2 = add nsw i32 %z, %x
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_4(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_4(
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %y, %x
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_2add_2sextlike_sub(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sextlike_sub(
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[SEXT1]], [[SEXT2]]
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = zext nneg i32 %add1 to i64
  %sext2 = zext nneg i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_nsw(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_nsw(
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[SEXT1]], [[SEXT2]]
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub nsw i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_nuw(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_nuw(
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub nuw i64 %sext1, %sext2
  ret i64 %sub
}

declare void @use_i32(i32, i32)
declare void @use_i64(i64, i64)

define i64 @src_2add_2sext_sub_multiple_uses_1(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_1(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[ADD1]] to i64
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT1]], i64 [[SEXT1]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i64(i64 %sext1, i64 %sext1)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_2(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_2(
; CHECK-NEXT:    [[ADD2:%.*]] = add nsw i32 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[ADD2]] to i64
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT2]], i64 [[SEXT2]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i64(i64 %sext2, i64 %sext2)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_3(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_3(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    [[ADD2:%.*]] = add nsw i32 [[X]], [[Z:%.*]]
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[ADD1]] to i64
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[ADD2]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[SEXT1]], [[SEXT2]]
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT1]], i64 [[SEXT2]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i64(i64 %sext1, i64 %sext2)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_4(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_4(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    [[ADD2:%.*]] = add nsw i32 [[X]], [[Z:%.*]]
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    call void @use_i32(i32 [[ADD1]], i32 [[ADD2]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i32(i32 %add1, i32 %add2)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_5(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_5(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[ADD1]] to i64
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z:%.*]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    call void @use_i32(i32 [[ADD1]], i32 [[ADD1]])
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT1]], i64 [[SEXT1]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i32(i32 %add1, i32 %add1)
  call void @use_i64(i64 %sext1, i64 %sext1)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_6(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_6(
; CHECK-NEXT:    [[ADD2:%.*]] = add nsw i32 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[ADD2]] to i64
; CHECK-NEXT:    [[TMP1:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    [[TMP2:%.*]] = sext i32 [[Z]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    call void @use_i32(i32 [[ADD2]], i32 [[ADD2]])
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT2]], i64 [[SEXT2]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i32(i32 %add2, i32 %add2)
  call void @use_i64(i64 %sext2, i64 %sext2)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_7(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_7(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    [[ADD2:%.*]] = add nsw i32 [[X]], [[Z:%.*]]
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[ADD1]] to i64
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[ADD2]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[SEXT1]], [[SEXT2]]
; CHECK-NEXT:    call void @use_i32(i32 [[ADD1]], i32 [[ADD2]])
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT1]], i64 [[SEXT2]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, %z
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i32(i32 %add1, i32 %add2)
  call void @use_i64(i64 %sext1, i64 %sext2)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_8(i32 %x, i32 %y) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_8(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT:    [[ADD2:%.*]] = add nsw i32 [[X]], 1
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[ADD1]] to i64
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[ADD2]] to i64
; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i64 [[SEXT1]], [[SEXT2]]
; CHECK-NEXT:    call void @use_i32(i32 [[ADD1]], i32 [[ADD2]])
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT1]], i64 [[SEXT2]])
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %add2 = add nsw i32 %x, 1
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i32(i32 %add1, i32 %add2)
  call void @use_i64(i64 %sext1, i64 %sext2)
  ret i64 %sub
}

define i64 @src_2add_2sext_sub_multiple_uses_9(i32 %x) {
; CHECK-LABEL: @src_2add_2sext_sub_multiple_uses_9(
; CHECK-NEXT:    [[ADD1:%.*]] = add nsw i32 [[X:%.*]], 2
; CHECK-NEXT:    [[ADD2:%.*]] = add nsw i32 [[X]], 1
; CHECK-NEXT:    [[SEXT1:%.*]] = sext i32 [[ADD1]] to i64
; CHECK-NEXT:    [[SEXT2:%.*]] = sext i32 [[ADD2]] to i64
; CHECK-NEXT:    call void @use_i32(i32 [[ADD1]], i32 [[ADD2]])
; CHECK-NEXT:    call void @use_i64(i64 [[SEXT1]], i64 [[SEXT2]])
; CHECK-NEXT:    ret i64 1
;
  %add1 = add nsw i32 %x, 2
  %add2 = add nsw i32 %x, 1
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %add2 to i64
  %sub = sub i64 %sext1, %sext2
  call void @use_i32(i32 %add1, i32 %add2)
  call void @use_i64(i64 %sext1, i64 %sext2)
  ret i64 %sub
}

define i64 @src_x_add_2sext_sub_1(i32 %x, i32 %y) {
; CHECK-LABEL: @src_x_add_2sext_sub_1(
; CHECK-NEXT:    [[SUB:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %x to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_x_add_2sext_sub_2(i32 %x, i32 %y) {
; CHECK-LABEL: @src_x_add_2sext_sub_2(
; CHECK-NEXT:    [[SUB:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %y, %x
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %x to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_x_add_2sextlike_sub(i32 %x, i32 %y) {
; CHECK-LABEL: @src_x_add_2sextlike_sub(
; CHECK-NEXT:    [[SUB:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %sext1 = zext nneg i32 %add1 to i64
  %sext2 = zext nneg i32 %x to i64
  %sub = sub i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_x_add_2sext_sub_nsw(i32 %x, i32 %y) {
; CHECK-LABEL: @src_x_add_2sext_sub_nsw(
; CHECK-NEXT:    [[SUB:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %x to i64
  %sub = sub nsw i64 %sext1, %sext2
  ret i64 %sub
}

define i64 @src_x_add_2sext_sub_nuw(i32 %x, i32 %y) {
; CHECK-LABEL: @src_x_add_2sext_sub_nuw(
; CHECK-NEXT:    [[SUB:%.*]] = sext i32 [[Y:%.*]] to i64
; CHECK-NEXT:    ret i64 [[SUB]]
;
  %add1 = add nsw i32 %x, %y
  %sext1 = sext i32 %add1 to i64
  %sext2 = sext i32 %x to i64
  %sub = sub nuw i64 %sext1, %sext2
  ret i64 %sub
}