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|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -aggressive-instcombine -S | FileCheck %s
define i16 @udiv_one_arg(i8 %x) {
; CHECK-LABEL: @udiv_one_arg(
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[X:%.*]] to i16
; CHECK-NEXT: [[DIV:%.*]] = udiv i16 [[ZEXT]], 42
; CHECK-NEXT: ret i16 [[DIV]]
;
%zext = zext i8 %x to i32
%div = udiv i32 %zext, 42
%trunc = trunc i32 %div to i16
ret i16 %trunc
}
define i16 @udiv_two_args(i16 %x, i16 %y) {
; CHECK-LABEL: @udiv_two_args(
; CHECK-NEXT: [[I0:%.*]] = udiv i16 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i16 [[I0]]
;
%zextx = zext i16 %x to i32
%zexty = zext i16 %y to i32
%i0 = udiv i32 %zextx, %zexty
%r = trunc i32 %i0 to i16
ret i16 %r
}
; Negative test
define i16 @udiv_big_const(i8 %x) {
; CHECK-LABEL: @udiv_big_const(
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[X:%.*]] to i32
; CHECK-NEXT: [[DIV:%.*]] = udiv i32 [[ZEXT]], 70000
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[DIV]] to i16
; CHECK-NEXT: ret i16 [[TRUNC]]
;
%zext = zext i8 %x to i32
%div = udiv i32 %zext, 70000
%trunc = trunc i32 %div to i16
ret i16 %trunc
}
define <2 x i16> @udiv_vector(<2 x i8> %x) {
; CHECK-LABEL: @udiv_vector(
; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i16>
; CHECK-NEXT: [[S:%.*]] = udiv <2 x i16> [[Z]], <i16 4, i16 10>
; CHECK-NEXT: ret <2 x i16> [[S]]
;
%z = zext <2 x i8> %x to <2 x i32>
%s = udiv <2 x i32> %z, <i32 4, i32 10>
%t = trunc <2 x i32> %s to <2 x i16>
ret <2 x i16> %t
}
; Negative test: can only fold to <2 x i16>, requiring new vector type
define <2 x i8> @udiv_vector_need_new_vector_type(<2 x i8> %x) {
; CHECK-LABEL: @udiv_vector_need_new_vector_type(
; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
; CHECK-NEXT: [[S:%.*]] = udiv <2 x i32> [[Z]], <i32 4, i32 500>
; CHECK-NEXT: [[T:%.*]] = trunc <2 x i32> [[S]] to <2 x i8>
; CHECK-NEXT: ret <2 x i8> [[T]]
;
%z = zext <2 x i8> %x to <2 x i32>
%s = udiv <2 x i32> %z, <i32 4, i32 500>
%t = trunc <2 x i32> %s to <2 x i8>
ret <2 x i8> %t
}
; Negative test
define <2 x i16> @udiv_vector_big_const(<2 x i8> %x) {
; CHECK-LABEL: @udiv_vector_big_const(
; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
; CHECK-NEXT: [[S:%.*]] = udiv <2 x i32> [[Z]], <i32 16, i32 70000>
; CHECK-NEXT: [[T:%.*]] = trunc <2 x i32> [[S]] to <2 x i16>
; CHECK-NEXT: ret <2 x i16> [[T]]
;
%z = zext <2 x i8> %x to <2 x i32>
%s = udiv <2 x i32> %z, <i32 16, i32 70000>
%t = trunc <2 x i32> %s to <2 x i16>
ret <2 x i16> %t
}
define i16 @udiv_exact(i16 %x, i16 %y) {
; CHECK-LABEL: @udiv_exact(
; CHECK-NEXT: [[I0:%.*]] = udiv exact i16 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i16 [[I0]]
;
%zextx = zext i16 %x to i32
%zexty = zext i16 %y to i32
%i0 = udiv exact i32 %zextx, %zexty
%r = trunc i32 %i0 to i16
ret i16 %r
}
define i16 @urem_one_arg(i8 %x) {
; CHECK-LABEL: @urem_one_arg(
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[X:%.*]] to i16
; CHECK-NEXT: [[DIV:%.*]] = urem i16 [[ZEXT]], 42
; CHECK-NEXT: ret i16 [[DIV]]
;
%zext = zext i8 %x to i32
%div = urem i32 %zext, 42
%trunc = trunc i32 %div to i16
ret i16 %trunc
}
define i16 @urem_two_args(i16 %x, i16 %y) {
; CHECK-LABEL: @urem_two_args(
; CHECK-NEXT: [[I0:%.*]] = urem i16 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: ret i16 [[I0]]
;
%zextx = zext i16 %x to i32
%zexty = zext i16 %y to i32
%i0 = urem i32 %zextx, %zexty
%r = trunc i32 %i0 to i16
ret i16 %r
}
; Negative test
define i16 @urem_big_const(i8 %x) {
; CHECK-LABEL: @urem_big_const(
; CHECK-NEXT: [[ZEXT:%.*]] = zext i8 [[X:%.*]] to i32
; CHECK-NEXT: [[DIV:%.*]] = urem i32 [[ZEXT]], 70000
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[DIV]] to i16
; CHECK-NEXT: ret i16 [[TRUNC]]
;
%zext = zext i8 %x to i32
%div = urem i32 %zext, 70000
%trunc = trunc i32 %div to i16
ret i16 %trunc
}
define <2 x i16> @urem_vector(<2 x i8> %x) {
; CHECK-LABEL: @urem_vector(
; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i16>
; CHECK-NEXT: [[S:%.*]] = urem <2 x i16> [[Z]], <i16 4, i16 10>
; CHECK-NEXT: ret <2 x i16> [[S]]
;
%z = zext <2 x i8> %x to <2 x i32>
%s = urem <2 x i32> %z, <i32 4, i32 10>
%t = trunc <2 x i32> %s to <2 x i16>
ret <2 x i16> %t
}
; Negative test: can only fold to <2 x i16>, requiring new vector type
define <2 x i8> @urem_vector_need_new_vector_type(<2 x i8> %x) {
; CHECK-LABEL: @urem_vector_need_new_vector_type(
; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
; CHECK-NEXT: [[S:%.*]] = urem <2 x i32> [[Z]], <i32 500, i32 10>
; CHECK-NEXT: [[T:%.*]] = trunc <2 x i32> [[S]] to <2 x i8>
; CHECK-NEXT: ret <2 x i8> [[T]]
;
%z = zext <2 x i8> %x to <2 x i32>
%s = urem <2 x i32> %z, <i32 500, i32 10>
%t = trunc <2 x i32> %s to <2 x i8>
ret <2 x i8> %t
}
; Negative test
define <2 x i16> @urem_vector_big_const(<2 x i8> %x) {
; CHECK-LABEL: @urem_vector_big_const(
; CHECK-NEXT: [[Z:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
; CHECK-NEXT: [[S:%.*]] = urem <2 x i32> [[Z]], <i32 16, i32 70000>
; CHECK-NEXT: [[T:%.*]] = trunc <2 x i32> [[S]] to <2 x i16>
; CHECK-NEXT: ret <2 x i16> [[T]]
;
%z = zext <2 x i8> %x to <2 x i32>
%s = urem <2 x i32> %z, <i32 16, i32 70000>
%t = trunc <2 x i32> %s to <2 x i16>
ret <2 x i16> %t
}
|
