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add a testcase for readonly call CSE

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llvm-svn: 122730
This commit is contained in:
Chris Lattner 2011-01-03 03:33:47 +00:00
parent 3d56e5f6d5
commit 57b02a342e
1 changed files with 12 additions and 0 deletions
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12
test/Transforms/EarlyCSE/basic.ll
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@ -75,3 +75,15 @@ F:
; CHECK: F:
; CHECK: ret i32 %Diff
}
declare i32 @func(i32 *%P) readonly
;; Simple call CSE'ing.
; CHECK: @test5
define i32 @test5(i32 *%P) {
%V1 = call i32 @func(i32* %P)
%V2 = call i32 @func(i32* %P)
%Diff = sub i32 %V1, %V2
ret i32 %Diff
; CHECK: ret i32 0
}