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Fix a bug introduced in my last commit. 

llvm-svn: 40542
This commit is contained in:
Owen Anderson 2007-07-26 18:57:04 +00:00
parent c701ace221
commit 0f692f27a3
3 changed files with 24 additions and 2 deletions
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8
llvm/lib/Analysis/MemoryDependenceAnalysis.cpp
View File

@ -117,12 +117,18 @@ bool MemoryDependenceAnalysis::nonLocalHelper(Instruction* query,
visited.insert(block);
bool inserted = false;
bool predOnStack = false;
for (pred_iterator PI = pred_begin(block), PE = pred_end(block);
PI != PE; ++PI)
if (!visited.count(*PI))
inserted |= nonLocalHelper(query, *PI, resp, visited);
else
predOnStack = true;
visited.erase(block);
if (!inserted && !predOnStack)
resp.insert(std::make_pair(block, None));
return inserted;
}

2
llvm/test/Transforms/GVN/2007-07-25-InfiniteLoop.ll
View File

@ -1,4 +1,4 @@
; RUN: llvm-as < %s | opt -gvn | llvm-dis
; RUN: llvm-as < %s | opt -gvn | llvm-dis | not grep {tmp10 =}
%struct.INT2 = type { i32, i32 }
@blkshifts = external global %struct.INT2* ; <%struct.INT2**> [#uses=2]

16
llvm/test/Transforms/GVN/2007-07-26-NonRedundant.ll Normal file
View File

@ -0,0 +1,16 @@
; RUN: llvm-as < %s | opt -gvn | llvm-dis
@bsLive = external global i32 ; <i32*> [#uses=2]
define i32 @bsR(i32 %n) {
entry:
br i1 false, label %cond_next, label %bb19
cond_next: ; preds = %entry
store i32 0, i32* @bsLive, align 4
br label %bb19
bb19: ; preds = %cond_next, %entry
%tmp29 = load i32* @bsLive, align 4 ; <i32> [#uses=0]
ret i32 0
}