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[InstCombine] add tests for div with shl operands; NFC

This commit is contained in:
Sanjay Patel 2022-10-11 17:06:01 -04:00
parent 7883900c04
commit bc032c7f53
1 changed files with 136 additions and 0 deletions
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136
llvm/test/Transforms/InstCombine/div-shift.ll
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@ -741,3 +741,139 @@ define i8 @sdiv_lshr_mul_nsw(i8 %x, i8 %y, i8 %z) {
%div = sdiv i8 %s, %x
ret i8 %div
}
define i8 @sdiv_shl_shl_nsw2_nuw(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @sdiv_shl_shl_nsw2_nuw(
; CHECK-NEXT: [[XZ:%.*]] = shl nsw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nuw nsw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = sdiv i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nsw i8 %x, %z
%yz = shl nsw nuw i8 %y, %z
%d = sdiv i8 %xz, %yz
ret i8 %d
}
define i8 @sdiv_shl_shl_nsw2_nuw_exact_use(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @sdiv_shl_shl_nsw2_nuw_exact_use(
; CHECK-NEXT: [[XZ:%.*]] = shl nsw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: call void @use(i8 [[XZ]])
; CHECK-NEXT: [[YZ:%.*]] = shl nuw nsw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = sdiv exact i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nsw i8 %x, %z
call void @use(i8 %xz)
%yz = shl nsw nuw i8 %y, %z
%d = sdiv exact i8 %xz, %yz
ret i8 %d
}
define i8 @sdiv_shl_shl_nsw_nuw2(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @sdiv_shl_shl_nsw_nuw2(
; CHECK-NEXT: [[XZ:%.*]] = shl nuw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nuw nsw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = sdiv i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nuw i8 %x, %z
%yz = shl nsw nuw i8 %y, %z
%d = sdiv i8 %xz, %yz
ret i8 %d
}
define i8 @sdiv_shl_shl_nsw_nuw(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @sdiv_shl_shl_nsw_nuw(
; CHECK-NEXT: [[XZ:%.*]] = shl nsw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nuw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = sdiv i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nsw i8 %x, %z
%yz = shl nuw i8 %y, %z
%d = sdiv i8 %xz, %yz
ret i8 %d
}
define i8 @sdiv_shl_shl_nuw_nsw2(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @sdiv_shl_shl_nuw_nsw2(
; CHECK-NEXT: [[XZ:%.*]] = shl nuw nsw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nsw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = sdiv i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nuw nsw i8 %x, %z
%yz = shl nsw i8 %y, %z
%d = sdiv i8 %xz, %yz
ret i8 %d
}
define <2 x i8> @udiv_shl_shl_nuw2(<2 x i8> %x, <2 x i8> %y, <2 x i8> %z) {
; CHECK-LABEL: @udiv_shl_shl_nuw2(
; CHECK-NEXT: [[XZ:%.*]] = shl nuw <2 x i8> [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nuw <2 x i8> [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = udiv <2 x i8> [[XZ]], [[YZ]]
; CHECK-NEXT: ret <2 x i8> [[D]]
;
%xz = shl nuw <2 x i8> %x, %z
%yz = shl nuw <2 x i8> %y, %z
%d = udiv <2 x i8> %xz, %yz
ret <2 x i8> %d
}
define i8 @udiv_shl_shl_nuw2_exact_use2(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @udiv_shl_shl_nuw2_exact_use2(
; CHECK-NEXT: [[XZ:%.*]] = shl nuw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: call void @use(i8 [[XZ]])
; CHECK-NEXT: [[YZ:%.*]] = shl nuw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: call void @use(i8 [[YZ]])
; CHECK-NEXT: [[D:%.*]] = udiv exact i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nuw i8 %x, %z
call void @use(i8 %xz)
%yz = shl nuw i8 %y, %z
call void @use(i8 %yz)
%d = udiv exact i8 %xz, %yz
ret i8 %d
}
define i8 @udiv_shl_shl_nuw_nsw(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @udiv_shl_shl_nuw_nsw(
; CHECK-NEXT: [[XZ:%.*]] = shl nuw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nsw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = udiv i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nuw i8 %x, %z
%yz = shl nsw i8 %y, %z
%d = udiv i8 %xz, %yz
ret i8 %d
}
define i8 @udiv_shl_shl_nsw_nuw(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @udiv_shl_shl_nsw_nuw(
; CHECK-NEXT: [[XZ:%.*]] = shl nsw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nuw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = udiv i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nsw i8 %x, %z
%yz = shl nuw i8 %y, %z
%d = udiv i8 %xz, %yz
ret i8 %d
}
define i8 @udiv_shl_shl_nuw_nsw2(i8 %x, i8 %y, i8 %z) {
; CHECK-LABEL: @udiv_shl_shl_nuw_nsw2(
; CHECK-NEXT: [[XZ:%.*]] = shl nuw nsw i8 [[X:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[YZ:%.*]] = shl nsw i8 [[Y:%.*]], [[Z]]
; CHECK-NEXT: [[D:%.*]] = udiv i8 [[XZ]], [[YZ]]
; CHECK-NEXT: ret i8 [[D]]
;
%xz = shl nuw nsw i8 %x, %z
%yz = shl nsw i8 %y, %z
%d = udiv i8 %xz, %yz
ret i8 %d
}