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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
define i1 @test1(i32 %a) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret i1 false
;
%rhs = add i32 %a, -1
%and = and i32 %a, %rhs
%res = icmp eq i32 %and, 1
ret i1 %res
}
define i1 @test1v(<2 x i32> %a) {
; CHECK-LABEL: @test1v(
; CHECK-NEXT: ret i1 false
;
%rhs = add <2 x i32> %a, <i32 -1, i32 0>
%and = and <2 x i32> %a, %rhs
%ext = extractelement <2 x i32> %and, i32 0
%res = icmp eq i32 %ext, 1
ret i1 %res
}
define i1 @test2(i32 %a) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret i1 false
;
%rhs = add i32 %a, 1
%and = and i32 %a, %rhs
%res = icmp eq i32 %and, 1
ret i1 %res
}
define i1 @test2v(<2 x i32> %a) {
; CHECK-LABEL: @test2v(
; CHECK-NEXT: ret i1 false
;
%rhs = add <2 x i32> %a, <i32 0, i32 1>
%and = and <2 x i32> %a, %rhs
%ext = extractelement <2 x i32> %and, i32 1
%res = icmp eq i32 %ext, 1
ret i1 %res
}
define i1 @test3(i32 %a) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: ret i1 false
;
%rhs = add i32 %a, 7
%and = and i32 %a, %rhs
%res = icmp eq i32 %and, 1
ret i1 %res
}
define i1 @test3v(<2 x i32> %a) {
; CHECK-LABEL: @test3v(
; CHECK-NEXT: ret i1 false
;
%rhs = add <2 x i32> %a, <i32 7, i32 0>
%and = and <2 x i32> %a, %rhs
%ext = extractelement <2 x i32> %and, i32 0
%res = icmp eq i32 %ext, 1
ret i1 %res
}
@B = external global i32
declare void @llvm.assume(i1)
; Known bits without a constant
define i1 @test4(i32 %a) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[B:%.*]] = load i32, ptr @B, align 4
; CHECK-NEXT: [[B_AND:%.*]] = and i32 [[B]], 1
; CHECK-NEXT: [[B_CND:%.*]] = icmp eq i32 [[B_AND]], 1
; CHECK-NEXT: call void @llvm.assume(i1 [[B_CND]])
; CHECK-NEXT: ret i1 false
;
%b = load i32, ptr @B
%b.and = and i32 %b, 1
%b.cnd = icmp eq i32 %b.and, 1
call void @llvm.assume(i1 %b.cnd)
%rhs = add i32 %a, %b
%and = and i32 %a, %rhs
%res = icmp eq i32 %and, 1
ret i1 %res
}
; Negative test - even number
define i1 @test5(i32 %a) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: [[RHS:%.*]] = add i32 [[A:%.*]], 2
; CHECK-NEXT: [[AND:%.*]] = and i32 [[A]], [[RHS]]
; CHECK-NEXT: [[RES:%.*]] = icmp eq i32 [[AND]], 1
; CHECK-NEXT: ret i1 [[RES]]
;
%rhs = add i32 %a, 2
%and = and i32 %a, %rhs
%res = icmp eq i32 %and, 1
ret i1 %res
}
define i1 @test5v(<2 x i32> %a) {
; CHECK-LABEL: @test5v(
; CHECK-NEXT: [[RHS:%.*]] = add <2 x i32> [[A:%.*]], <i32 2, i32 0>
; CHECK-NEXT: [[AND:%.*]] = and <2 x i32> [[A]], [[RHS]]
; CHECK-NEXT: [[EXT:%.*]] = extractelement <2 x i32> [[AND]], i32 1
; CHECK-NEXT: [[RES:%.*]] = icmp eq i32 [[EXT]], 1
; CHECK-NEXT: ret i1 [[RES]]
;
%rhs = add <2 x i32> %a, <i32 2, i32 0>
%and = and <2 x i32> %a, %rhs
%ext = extractelement <2 x i32> %and, i32 1
%res = icmp eq i32 %ext, 1
ret i1 %res
}
define i1 @test6(i32 %a) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: ret i1 false
;
%lhs = add i32 %a, -1
%and = and i32 %lhs, %a
%res = icmp eq i32 %and, 1
ret i1 %res
}
define i1 @test6v(<2 x i32> %a) {
; CHECK-LABEL: @test6v(
; CHECK-NEXT: ret i1 false
;
%lhs = add <2 x i32> %a, <i32 0, i32 -1>
%and = and <2 x i32> %lhs, %a
%ext = extractelement <2 x i32> %and, i32 1
%res = icmp eq i32 %ext, 1
ret i1 %res
}
|
