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minor tidying of comments. 

llvm-svn: 52630
This commit is contained in:
Chris Lattner 2008-06-23 17:11:23 +00:00
parent 210e6c1876
commit 4d754bc97b
1 changed files with 14 additions and 12 deletions
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26
llvm/lib/Transforms/Scalar/ScalarReplAggregates.cpp
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@ -313,12 +313,13 @@ void SROA::DoScalarReplacement(AllocationInst *AI,
continue;
}
// Replace %res = load { i32, i32 }* %alloc
// by
// %load.0 = load i32* %alloc.0
// %insert.0 insertvalue { i32, i32 } zeroinitializer, i32 %load.0, 0
// %load.1 = load i32* %alloc.1
// %insert = insertvalue { i32, i32 } %insert.0, i32 %load.1, 1
// Replace:
// %res = load { i32, i32 }* %alloc
// with:
// %load.0 = load i32* %alloc.0
// %insert.0 insertvalue { i32, i32 } zeroinitializer, i32 %load.0, 0
// %load.1 = load i32* %alloc.1
// %insert = insertvalue { i32, i32 } %insert.0, i32 %load.1, 1
// (Also works for arrays instead of structs)
if (LoadInst *LI = dyn_cast<LoadInst>(User)) {
Value *Insert = UndefValue::get(LI->getType());
@ -331,12 +332,13 @@ void SROA::DoScalarReplacement(AllocationInst *AI,
continue;
}
// Replace store { i32, i32 } %val, { i32, i32 }* %alloc
// by
// %val.0 = extractvalue { i32, i32 } %val, 0
// store i32 %val.0, i32* %alloc.0
// %val.1 = extractvalue { i32, i32 } %val, 1
// store i32 %val.1, i32* %alloc.1
// Replace:
// store { i32, i32 } %val, { i32, i32 }* %alloc
// with:
// %val.0 = extractvalue { i32, i32 } %val, 0
// store i32 %val.0, i32* %alloc.0
// %val.1 = extractvalue { i32, i32 } %val, 1
// store i32 %val.1, i32* %alloc.1
// (Also works for arrays instead of structs)
if (StoreInst *SI = dyn_cast<StoreInst>(User)) {
Value *Val = SI->getOperand(0);