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Handle multiple return values.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47904 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2008-03-04 21:15:15 +00:00
parent a76e2f0331
commit dc00d42bb1
2 changed files with 41 additions and 3 deletions
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18
lib/Transforms/Utils/InlineFunction.cpp
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@@ -442,9 +442,21 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD) {
// If the return instruction returned a value, replace uses of the call with // If the return instruction returned a value, replace uses of the call with
// uses of the returned value. // uses of the returned value.
if (!TheCall->use_empty()) if (!TheCall->use_empty()) {
TheCall->replaceAllUsesWith(Returns[0]->getReturnValue()); ReturnInst *R = Returns[0];
if (R->getNumOperands() > 1) {
// Multiple return values.
for (Value::use_iterator RUI = TheCall->use_begin(),
RUE = TheCall->use_end(); RUI != RUE; ) {
GetResultInst *GR = dyn_cast<GetResultInst>(RUI++);
assert (GR && "Invalid Call instruction use!");
Value *RV = R->getOperand(GR->getIndex());
GR->replaceAllUsesWith(RV);
GR->eraseFromParent();
}
} else
TheCall->replaceAllUsesWith(R->getReturnValue());
}
// Since we are now done with the Call/Invoke, we can delete it. // Since we are now done with the Call/Invoke, we can delete it.
TheCall->getParent()->getInstList().erase(TheCall); TheCall->getParent()->getInstList().erase(TheCall);

26
test/Transforms/Inline/2008-03-04-StructRet.ll Normal file
View File

@@ -0,0 +1,26 @@
; RUN: llvm-as < %s | opt -inline -sretpromotion -disable-output
%struct.Benchmark = type { i32 (...)** }
%struct.Complex = type { double, double }
%struct.ComplexBenchmark = type { %struct.Benchmark }
define void @_Zml7ComplexS_(%struct.Complex* sret %agg.result, double %a.0, double %a.1, double %b.0, double %b.1) nounwind {
entry:
ret void
}
define void @_ZNK16ComplexBenchmark9oop_styleEv(%struct.ComplexBenchmark* %this) nounwind {
entry:
%tmp = alloca %struct.Complex ; <%struct.Complex*> [#uses=2]
br label %bb31
bb: ; preds = %bb31
call void @_Zml7ComplexS_( %struct.Complex* sret %tmp, double 0.000000e+00, double 0.000000e+00, double 0.000000e+00, double 0.000000e+00 ) nounwind
%tmp21 = getelementptr %struct.Complex* %tmp, i32 0, i32 1 ; <double*> [#uses=0]
br label %bb31
bb31: ; preds = %bb, %entry
br i1 false, label %bb, label %return
return: ; preds = %bb31
ret void
}