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[InstCombine][test] add tests for icmp with constant and offset; NFC

This commit is contained in:
Sanjay Patel 2021-06-30 13:00:08 -04:00
parent 230df8a419
commit 36bd25db3d
1 changed files with 46 additions and 0 deletions
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46
llvm/test/Transforms/InstCombine/icmp-add.ll
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@ -747,3 +747,49 @@ define i1 @with_nuw_large_negative(i8 %x, i8 %y) {
%tobool = icmp eq i8 %t2, %t1
ret i1 %tobool
}
define i1 @ugt_offset(i8 %a) {
; CHECK-LABEL: @ugt_offset(
; CHECK-NEXT: [[T:%.*]] = add i8 [[A:%.*]], 124
; CHECK-NEXT: [[OV:%.*]] = icmp ugt i8 [[T]], -5
; CHECK-NEXT: ret i1 [[OV]]
;
%t = add i8 %a, 124
%ov = icmp ugt i8 %t, 251
ret i1 %ov
}
define i1 @ugt_offset_use(i32 %a) {
; CHECK-LABEL: @ugt_offset_use(
; CHECK-NEXT: [[T:%.*]] = add i32 [[A:%.*]], 42
; CHECK-NEXT: call void @use(i32 [[T]])
; CHECK-NEXT: [[OV:%.*]] = icmp ugt i32 [[T]], -2147483607
; CHECK-NEXT: ret i1 [[OV]]
;
%t = add i32 %a, 42
call void @use(i32 %t)
%ov = icmp ugt i32 %t, 2147483689
ret i1 %ov
}
define <2 x i1> @ugt_offset_splat(<2 x i5> %a) {
; CHECK-LABEL: @ugt_offset_splat(
; CHECK-NEXT: [[T:%.*]] = add <2 x i5> [[A:%.*]], <i5 9, i5 9>
; CHECK-NEXT: [[OV:%.*]] = icmp ugt <2 x i5> [[T]], <i5 -8, i5 -8>
; CHECK-NEXT: ret <2 x i1> [[OV]]
;
%t = add <2 x i5> %a, <i5 9, i5 9>
%ov = icmp ugt <2 x i5> %t, <i5 24, i5 24>
ret <2 x i1> %ov
}
define i1 @ugt_wrong_offset(i8 %a) {
; CHECK-LABEL: @ugt_wrong_offset(
; CHECK-NEXT: [[T:%.*]] = add i8 [[A:%.*]], 123
; CHECK-NEXT: [[OV:%.*]] = icmp ugt i8 [[T]], -5
; CHECK-NEXT: ret i1 [[OV]]
;
%t = add i8 %a, 123
%ov = icmp ugt i8 %t, 251
ret i1 %ov
}