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merge phi-merge.ll into phi.ll

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I don't know what Dan wants to do with phi-merge-gep.ll, I'll let
him deal with it because instcombine may end up sinking these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85739 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-11-01 20:10:11 +00:00
parent a664bb7bdc
commit 213a8d3a48
2 changed files with 34 additions and 32 deletions
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31
test/Transforms/InstCombine/phi-merge.ll
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@ -1,31 +0,0 @@
; RUN: opt < %s -instcombine -S | not grep {phi i32}
; PR1777
declare i1 @rrr()
define i1 @zxcv() {
entry:
%a = alloca i32
%i = ptrtoint i32* %a to i32
%b = call i1 @rrr()
br i1 %b, label %one, label %two
one:
%x = phi i32 [%i, %entry], [%y, %two]
%c = call i1 @rrr()
br i1 %c, label %two, label %end
two:
%y = phi i32 [%i, %entry], [%x, %one]
%d = call i1 @rrr()
br i1 %d, label %one, label %end
end:
%f = phi i32 [ %x, %one], [%y, %two]
; Change the %f to %i, and the optimizer suddenly becomes a lot smarter
; even though %f must equal %i at this point
%g = inttoptr i32 %f to i32*
store i32 10, i32* %g
%z = call i1 @rrr()
ret i1 %z
}

35
test/Transforms/InstCombine/phi.ll
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@ -186,6 +186,39 @@ bb2:
; CHECK-NEXT: phi i32* [ %B, %bb ], [ %A, %bb1 ]
; CHECK-NEXT: %E = load i32* %{{[^,]*}}, align 16
; CHECK-NEXT: ret i32 %E
}
; PR1777
declare i1 @test11a()
define i1 @test11() {
entry:
%a = alloca i32
%i = ptrtoint i32* %a to i32
%b = call i1 @test11a()
br i1 %b, label %one, label %two
one:
%x = phi i32 [%i, %entry], [%y, %two]
%c = call i1 @test11a()
br i1 %c, label %two, label %end
two:
%y = phi i32 [%i, %entry], [%x, %one]
%d = call i1 @test11a()
br i1 %d, label %one, label %end
end:
%f = phi i32 [ %x, %one], [%y, %two]
; Change the %f to %i, and the optimizer suddenly becomes a lot smarter
; even though %f must equal %i at this point
%g = inttoptr i32 %f to i32*
store i32 10, i32* %g
%z = call i1 @test11a()
ret i1 %z
; CHECK: @test11
; CHECK-NOT: phi i32
; CHECK: ret i1 %z
}