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[InstCombine] Add tests (cmp eq/ne (umax/uadd.sat X, Y), 0); NFC

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Differential Revision: https://reviews.llvm.org/D149424
This commit is contained in:
Noah Goldstein 2023-04-27 23:09:05 -05:00
parent df017ba9d3
commit 585af9e39f
1 changed files with 75 additions and 1 deletions
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76
llvm/test/Transforms/InstCombine/cmp-intrinsic.ll
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@ -7,6 +7,8 @@ declare <2 x i64> @llvm.bswap.v2i64(<2 x i64>)
declare i32 @llvm.cttz.i32(i32, i1)
declare i33 @llvm.cttz.i33(i33, i1)
declare i32 @llvm.ctlz.i32(i32, i1)
declare i8 @llvm.umax.i8(i8, i8)
declare i8 @llvm.uadd.sat.i8(i8, i8)
declare i33 @llvm.ctlz.i33(i33, i1)
declare i8 @llvm.ctpop.i8(i8)
declare i11 @llvm.ctpop.i11(i11)
@ -16,6 +18,7 @@ declare <2 x i32> @llvm.ctpop.v2i32(<2 x i32>)
declare i8 @llvm.bitreverse.i8(i8)
declare <2 x i8> @llvm.bitreverse.v2i8(<2 x i8>)
declare void @use6(i6)
declare void @use8(i8)
define i1 @bswap_eq_i16(i16 %x) {
; CHECK-LABEL: @bswap_eq_i16(
@ -786,7 +789,6 @@ define i1 @bitreverse_ult_22_fail_not_equality_pred(i8 %x) {
ret i1 %z
}
define <2 x i1> @bitreverse_vec_eq_2_2(<2 x i8> %x) {
; CHECK-LABEL: @bitreverse_vec_eq_2_2(
; CHECK-NEXT: [[Z:%.*]] = icmp eq <2 x i8> [[X:%.*]], <i8 64, i8 64>
@ -807,3 +809,75 @@ define <2 x i1> @bitreverse_vec_eq_1_2_todo_no_splat(<2 x i8> %x) {
%z = icmp eq <2 x i8> %y, <i8 1, i8 2>
ret <2 x i1> %z
}
define i1 @umax_eq_zero(i8 %x, i8 %y) {
; CHECK-LABEL: @umax_eq_zero(
; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[M]], 0
; CHECK-NEXT: ret i1 [[R]]
;
%m = call i8 @llvm.umax.i8(i8 %x, i8 %y)
%r = icmp eq i8 %m, 0
ret i1 %r
}
define i1 @umax_eq_1_fail(i8 %x, i8 %y) {
; CHECK-LABEL: @umax_eq_1_fail(
; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 [[M]], 1
; CHECK-NEXT: ret i1 [[R]]
;
%m = call i8 @llvm.umax.i8(i8 %x, i8 %y)
%r = icmp eq i8 %m, 1
ret i1 %r
}
define i1 @umax_sle_zero_fail(i8 %x, i8 %y) {
; CHECK-LABEL: @umax_sle_zero_fail(
; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp slt i8 [[M]], 1
; CHECK-NEXT: ret i1 [[R]]
;
%m = call i8 @llvm.umax.i8(i8 %x, i8 %y)
%r = icmp sle i8 %m, 0
ret i1 %r
}
define i1 @umax_ne_zero(i8 %x, i8 %y) {
; CHECK-LABEL: @umax_ne_zero(
; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[M]], 0
; CHECK-NEXT: ret i1 [[R]]
;
%m = call i8 @llvm.umax.i8(i8 %x, i8 %y)
%r = icmp ne i8 %m, 0
ret i1 %r
}
define i1 @umax_ne_zero_fail_multiuse(i8 %x, i8 %y) {
; CHECK-LABEL: @umax_ne_zero_fail_multiuse(
; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.umax.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
; CHECK-NEXT: call void @use8(i8 [[M]])
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[M]], 0
; CHECK-NEXT: ret i1 [[R]]
;
%m = call i8 @llvm.umax.i8(i8 %x, i8 %y)
call void @use8(i8 %m)
%r = icmp ne i8 %m, 0
ret i1 %r
}
define i1 @uadd_sat_ne_zero_fail_multiuse(i8 %x, i8 %y) {
; CHECK-LABEL: @uadd_sat_ne_zero_fail_multiuse(
; CHECK-NEXT: [[M:%.*]] = call i8 @llvm.uadd.sat.i8(i8 [[X:%.*]], i8 [[Y:%.*]])
; CHECK-NEXT: call void @use8(i8 [[M]])
; CHECK-NEXT: [[TMP1:%.*]] = or i8 [[X]], [[Y]]
; CHECK-NEXT: [[R:%.*]] = icmp ne i8 [[TMP1]], 0
; CHECK-NEXT: ret i1 [[R]]
;
%m = call i8 @llvm.uadd.sat.i8(i8 %x, i8 %y)
call void @use8(i8 %m)
%r = icmp ne i8 %m, 0
ret i1 %r
}