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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
declare void @use.i8(i8)
define i1 @sdiv_exact_eq_0(i8 %x, i8 %y) {
; CHECK-LABEL: @sdiv_exact_eq_0(
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X:%.*]], 0
; CHECK-NEXT: ret i1 [[R]]
;
%d = sdiv exact i8 %x, %y
%r = icmp eq i8 %d, 0
ret i1 %r
}
define i1 @udiv_exact_ne_0(i8 %x, i8 %y) {
; CHECK-LABEL: @udiv_exact_ne_0(
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X:%.*]], 0
; CHECK-NEXT: ret i1 [[R]]
;
%d = udiv exact i8 %x, %y
%r = icmp ne i8 %d, 0
ret i1 %r
}
define i1 @sdiv_exact_ne_1(i8 %x, i8 %y) {
; CHECK-LABEL: @sdiv_exact_ne_1(
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[X:%.*]], 0
; CHECK-NEXT: ret i1 [[R]]
;
%d = sdiv exact i8 %x, %y
%r = icmp eq i8 %d, 0
ret i1 %r
}
define i1 @udiv_exact_eq_1(i8 %x, i8 %y) {
; CHECK-LABEL: @udiv_exact_eq_1(
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%d = udiv exact i8 %x, %y
%r = icmp ne i8 %d, 1
ret i1 %r
}
define i1 @sdiv_exact_eq_9_no_of(i8 %x, i8 %y) {
; CHECK-LABEL: @sdiv_exact_eq_9_no_of(
; CHECK-NEXT: [[YY:%.*]] = and i8 [[Y:%.*]], 7
; CHECK-NEXT: [[TMP1:%.*]] = mul nuw nsw i8 [[YY]], 9
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[TMP1]], [[X:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%yy = and i8 %y, 7
%d = sdiv exact i8 %x, %yy
%r = icmp eq i8 %d, 9
ret i1 %r
}
define i1 @sdiv_exact_eq_9_may_of(i8 %x, i8 %y) {
; CHECK-LABEL: @sdiv_exact_eq_9_may_of(
; CHECK-NEXT: [[D:%.*]] = sdiv exact i8 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[D]], 9
; CHECK-NEXT: ret i1 [[R]]
;
%d = sdiv exact i8 %x, %y
%r = icmp eq i8 %d, 9
ret i1 %r
}
define i1 @sdiv_exact_eq_9_no_of_fail_multiuse(i8 %x, i8 %y) {
; CHECK-LABEL: @sdiv_exact_eq_9_no_of_fail_multiuse(
; CHECK-NEXT: [[YY:%.*]] = and i8 [[Y:%.*]], 7
; CHECK-NEXT: [[D:%.*]] = sdiv exact i8 [[X:%.*]], [[YY]]
; CHECK-NEXT: call void @use.i8(i8 [[D]])
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[D]], 9
; CHECK-NEXT: ret i1 [[R]]
;
%yy = and i8 %y, 7
%d = sdiv exact i8 %x, %yy
call void @use.i8(i8 %d)
%r = icmp eq i8 %d, 9
ret i1 %r
}
define i1 @sdiv_exact_eq_9_must_of_todo_is_false(i8 %x, i8 %y) {
; CHECK-LABEL: @sdiv_exact_eq_9_must_of_todo_is_false(
; CHECK-NEXT: [[YY:%.*]] = or i8 [[Y:%.*]], 55
; CHECK-NEXT: [[D:%.*]] = sdiv exact i8 [[X:%.*]], [[YY]]
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[D]], 9
; CHECK-NEXT: ret i1 [[R]]
;
%yy = or i8 %y, 55
%d = sdiv exact i8 %x, %yy
%r = icmp eq i8 %d, 9
ret i1 %r
}
define i1 @udiv_exact_ne_30_no_of(i8 %x, i8 %y) {
; CHECK-LABEL: @udiv_exact_ne_30_no_of(
; CHECK-NEXT: [[YY:%.*]] = and i8 [[Y:%.*]], 7
; CHECK-NEXT: [[TMP1:%.*]] = mul nuw i8 [[YY]], 30
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[TMP1]], [[X:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%yy = and i8 %y, 7
%d = udiv exact i8 %x, %yy
%r = icmp ne i8 %d, 30
ret i1 %r
}
|
