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RLE isn't smart enough to eliminate this safely yet.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60994 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-12-13 21:04:20 +00:00
parent 4f118f0a20
commit 3f101bb1e7
1 changed files with 21 additions and 0 deletions
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test/Transforms/GVN/rle-no-phi-translate.ll Normal file
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; RUN: llvm-as < %s | opt -gvn | llvm-dis | grep load
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin7"
define i32 @g(i32* %b, i32* %c) nounwind {
entry:
store i32 1, i32* %b
store i32 2, i32* %c
%t1 = icmp eq i32* %b, null ; <i1> [#uses=1]
br i1 %t1, label %bb, label %bb2
bb: ; preds = %entry
br label %bb2
bb2: ; preds = %bb1, %bb
%c_addr.0 = phi i32* [ %b, %entry ], [ %c, %bb ] ; <i32*> [#uses=1]
%cv = load i32* %c_addr.0, align 4 ; <i32> [#uses=1]
ret i32 %cv
}