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| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -instcombine < %s | FileCheck %s
@g = external global i32
define i1 @smin(i32 %other) {
; CHECK-LABEL: @smin(
; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 [[OTHER:%.*]], 0
; CHECK-NEXT: ret i1 [[TEST]]
;
%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
%cmp = icmp slt i32 %positive, %other
%sel = select i1 %cmp, i32 %positive, i32 %other
%test = icmp sgt i32 %sel, 0
ret i1 %test
}
; Range metadata doesn't work for vectors, so find another way to trigger isKnownPositive().
define <2 x i1> @smin_vec(<2 x i32> %x, <2 x i32> %other) {
; CHECK-LABEL: @smin_vec(
; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[OTHER:%.*]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[TEST]]
;
%notneg = and <2 x i32> %x, <i32 7, i32 7>
%positive = or <2 x i32> %notneg, <i32 1, i32 1>
%cmp = icmp slt <2 x i32> %positive, %other
%sel = select <2 x i1> %cmp, <2 x i32> %positive, <2 x i32> %other
%test = icmp sgt <2 x i32> %sel, zeroinitializer
ret <2 x i1> %test
}
define i1 @smin_commute(i32 %other) {
; CHECK-LABEL: @smin_commute(
; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 [[OTHER:%.*]], 0
; CHECK-NEXT: ret i1 [[TEST]]
;
%positive = load i32, i32* @g, !range !{i32 1, i32 2048}
%cmp = icmp slt i32 %other, %positive
%sel = select i1 %cmp, i32 %other, i32 %positive
%test = icmp sgt i32 %sel, 0
ret i1 %test
}
define <2 x i1> @smin_commute_vec(<2 x i32> %x, <2 x i32> %other) {
; CHECK-LABEL: @smin_commute_vec(
; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[OTHER:%.*]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[TEST]]
;
%notneg = and <2 x i32> %x, <i32 7, i32 7>
%positive = or <2 x i32> %notneg, <i32 1, i32 1>
%cmp = icmp slt <2 x i32> %other, %positive
%sel = select <2 x i1> %cmp, <2 x i32> %other, <2 x i32> %positive
%test = icmp sgt <2 x i32> %sel, zeroinitializer
ret <2 x i1> %test
}
define <2 x i1> @smin_commute_vec_undef_elts(<2 x i32> %x, <2 x i32> %other) {
; CHECK-LABEL: @smin_commute_vec_undef_elts(
; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[OTHER:%.*]], <i32 0, i32 undef>
; CHECK-NEXT: ret <2 x i1> [[TEST]]
;
%notneg = and <2 x i32> %x, <i32 7, i32 7>
%positive = or <2 x i32> %notneg, <i32 1, i32 1>
%cmp = icmp slt <2 x i32> %other, %positive
%sel = select <2 x i1> %cmp, <2 x i32> %other, <2 x i32> %positive
%test = icmp sgt <2 x i32> %sel, <i32 0, i32 undef>
ret <2 x i1> %test
}
; %positive might be zero
define i1 @maybe_not_positive(i32 %other) {
; CHECK-LABEL: @maybe_not_positive(
; CHECK-NEXT: [[POSITIVE:%.*]] = load i32, i32* @g, align 4, !range !0
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[POSITIVE]], [[OTHER:%.*]]
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[CMP]], i32 [[POSITIVE]], i32 [[OTHER]]
; CHECK-NEXT: [[TEST:%.*]] = icmp sgt i32 [[SEL]], 0
; CHECK-NEXT: ret i1 [[TEST]]
;
%positive = load i32, i32* @g, !range !{i32 0, i32 2048}
%cmp = icmp slt i32 %positive, %other
%sel = select i1 %cmp, i32 %positive, i32 %other
%test = icmp sgt i32 %sel, 0
ret i1 %test
}
define <2 x i1> @maybe_not_positive_vec(<2 x i32> %x, <2 x i32> %other) {
; CHECK-LABEL: @maybe_not_positive_vec(
; CHECK-NEXT: [[NOTNEG:%.*]] = and <2 x i32> [[X:%.*]], <i32 7, i32 7>
; CHECK-NEXT: [[CMP:%.*]] = icmp slt <2 x i32> [[NOTNEG]], [[OTHER:%.*]]
; CHECK-NEXT: [[SEL:%.*]] = select <2 x i1> [[CMP]], <2 x i32> [[NOTNEG]], <2 x i32> [[OTHER]]
; CHECK-NEXT: [[TEST:%.*]] = icmp sgt <2 x i32> [[SEL]], zeroinitializer
; CHECK-NEXT: ret <2 x i1> [[TEST]]
;
%notneg = and <2 x i32> %x, <i32 7, i32 7>
%cmp = icmp slt <2 x i32> %notneg, %other
%sel = select <2 x i1> %cmp, <2 x i32> %notneg, <2 x i32> %other
%test = icmp sgt <2 x i32> %sel, zeroinitializer
ret <2 x i1> %test
}
|