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Fix a failure I accidentally caused in my last commit by mishandling the

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removal of redundant phis.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40650 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2007-07-31 20:18:28 +00:00
parent c7d1114ade
commit b95f9d565f
2 changed files with 24 additions and 0 deletions
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2
lib/Transforms/Scalar/GVN.cpp
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@ -747,6 +747,8 @@ Value *GVN::GetValueForBlock(BasicBlock *BB, LoadInst* orig,
PN->replaceAllUsesWith(first);
PN->eraseFromParent();
Phis[BB] = first;
return first;
}

22
test/Transforms/GVN/2007-07-31-RedundantPhi.ll Normal file
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@ -0,0 +1,22 @@
; RUN: llvm-as < %s | opt -gvn | llvm-dis | not grep {tmp701 =}
@img_width = external global i16 ; <i16*> [#uses=2]
define i32 @smpUMHEXBipredIntegerPelBlockMotionSearch(i16* %cur_pic, i16 signext %ref, i32 %list, i32 %pic_pix_x, i32 %pic_pix_y, i32 %blocktype, i16 signext %pred_mv_x1, i16 signext %pred_mv_y1, i16 signext %pred_mv_x2, i16 signext %pred_mv_y2, i16* %mv_x, i16* %mv_y, i16* %s_mv_x, i16* %s_mv_y, i32 %search_range, i32 %min_mcost, i32 %lambda_factor) {
cond_next143: ; preds = %entry
store i16 0, i16* @img_width, align 2
br i1 false, label %cond_next449, label %cond_false434
cond_false434: ; preds = %cond_true415
br label %cond_next449
cond_next449: ; preds = %cond_false434, %cond_true415
br i1 false, label %cond_next698, label %cond_false470
cond_false470: ; preds = %cond_next449
br label %cond_next698
cond_next698: ; preds = %cond_true492
%tmp701 = load i16* @img_width, align 2 ; <i16> [#uses=0]
ret i32 0
}