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Imported Upstream version 5.18.0.179

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Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215
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Xamarin Public Jenkins (auto-signing)
2018-10-25 08:34:57 +00:00
parent d6bde52373
commit 8625704ad8
28485 changed files with 3866843 additions and 50 deletions
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49
external/llvm/test/Analysis/ValueTracking/monotonic-phi.ll vendored Normal file
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; RUN: opt -instsimplify -S < %s | FileCheck %s
; CHECK-LABEL: @test1
define i1 @test1(i8 %p, i8* %pq, i8 %n, i8 %r) {
entry:
br label %loop
loop:
%A = phi i8 [ 1, %entry ], [ %next, %loop ]
%next = add nsw i8 %A, 1
%cmp1 = icmp eq i8 %A, %n
br i1 %cmp1, label %exit, label %loop
exit:
%add = or i8 %A, %r
%cmp = icmp eq i8 %add, 0
; CHECK: ret i1 false
ret i1 %cmp
}
; CHECK-LABEL: @test2
define i1 @test2(i8 %p, i8* %pq, i8 %n, i8 %r) {
entry:
br label %loop
loop:
%A = phi i8 [ 1, %entry ], [ %next, %loop ]
%next = add i8 %A, 1
%cmp1 = icmp eq i8 %A, %n
br i1 %cmp1, label %exit, label %loop
exit:
%add = or i8 %A, %r
%cmp = icmp eq i8 %add, 0
; CHECK-NOT: ret i1 false
ret i1 %cmp
}
; CHECK-LABEL: @test3
define i1 @test3(i8 %p, i8* %pq, i8 %n, i8 %r) {
entry:
br label %loop
loop:
%A = phi i8 [ 1, %entry ], [ %next, %loop ]
%next = add nuw i8 %A, 1
%cmp1 = icmp eq i8 %A, %n
br i1 %cmp1, label %exit, label %loop
exit:
%add = or i8 %A, %r
%cmp = icmp eq i8 %add, 0
; CHECK: ret i1 false
ret i1 %cmp
}