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; RUN: llc < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
; and can be eliminated
; CHECK-LABEL: {{^}}test_call_known_max_range:
; CHECK: bl foo
; CHECK-NOT: and
; CHECK: ret
define i32 @test_call_known_max_range() #0 {
entry:
%id = tail call i32 @foo(), !range !0, !noundef !{}
%and = and i32 %id, 1023
ret i32 %and
}
; CHECK-LABEL: {{^}}test_call_known_trunc_1_bit_range:
; CHECK: bl foo
; CHECK: and w{{[0-9]+}}, w0, #0x1ff
; CHECK: ret
define i32 @test_call_known_trunc_1_bit_range() #0 {
entry:
%id = tail call i32 @foo(), !range !0, !noundef !{}
%and = and i32 %id, 511
ret i32 %and
}
; CHECK-LABEL: {{^}}test_call_known_max_range_m1:
; CHECK: bl foo
; CHECK: and w{{[0-9]+}}, w0, #0xff
; CHECK: ret
define i32 @test_call_known_max_range_m1() #0 {
entry:
%id = tail call i32 @foo(), !range !1, !noundef !{}
%and = and i32 %id, 255
ret i32 %and
}
; and can be eliminated
; CHECK-LABEL: {{^}}test_call_known_max_range_attr:
; CHECK: bl foo
; CHECK-NOT: and
; CHECK: ret
define i32 @test_call_known_max_range_attr() #0 {
entry:
%id = tail call noundef range(i32 0, 1024) i32 @foo()
%and = and i32 %id, 1023
ret i32 %and
}
; CHECK-LABEL: {{^}}test_call_known_max_range_attr_no_noundef:
; CHECK: bl foo
; CHECK: and w{{[0-9]+}}, w0, #0x3ff
; CHECK: ret
define i32 @test_call_known_max_range_attr_no_noundef() #0 {
entry:
%id = tail call range(i32 0, 1024) i32 @foo()
%and = and i32 %id, 1023
ret i32 %and
}
declare i32 @foo()
attributes #0 = { norecurse nounwind }
attributes #1 = { nounwind readnone }
!0 = !{i32 0, i32 1024}
!1 = !{i32 0, i32 1023}
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