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authorChris Lattner <sabre@nondot.org>2008-03-02 03:57:08 +0000
committerChris Lattner <sabre@nondot.org>2008-03-02 03:57:08 +0000
commita5f0bc07fa0d57a199c32d3b87bc695a30acaed8 (patch)
treec46891fdc454d6ad2b23c6f72e199785beaefed1
parentf41a794f36dadb45681f946fac9b1feeb2c3ba73 (diff)
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implement extractelement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47812 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--lib/Target/CBackend/CBackend.cpp19
1 files changed, 17 insertions, 2 deletions
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index bdef34d..5e98798 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -191,8 +191,10 @@ namespace {
// Don't inline a load across a store or other bad things!
return false;
- // Must not be used in inline asm
- if (I.hasOneUse() && isInlineAsm(*I.use_back())) return false;
+ // Must not be used in inline asm or extractelement.
+ if (I.hasOneUse() &&
+ (isInlineAsm(*I.use_back()) || isa<ExtractElementInst>(I)))
+ return false;
// Only inline instruction it if it's use is in the same BB as the inst.
return I.getParent() == cast<Instruction>(I.use_back())->getParent();
@@ -253,6 +255,7 @@ namespace {
void visitVAArgInst (VAArgInst &I);
void visitInsertElementInst(InsertElementInst &I);
+ void visitExtractElementInst(ExtractElementInst &I);
void visitInstruction(Instruction &I) {
cerr << "C Writer does not know about " << I;
@@ -3037,6 +3040,18 @@ void CWriter::visitInsertElementInst(InsertElementInst &I) {
Out << ")";
}
+void CWriter::visitExtractElementInst(ExtractElementInst &I) {
+ // We know that our operand is not inlined.
+ Out << "((";
+ const Type *EltTy =
+ cast<VectorType>(I.getOperand(0)->getType())->getElementType();
+ printType(Out, PointerType::getUnqual(EltTy));
+ Out << ")(&" << GetValueName(I.getOperand(0)) << "))[";
+ writeOperand(I.getOperand(1));
+ Out << "]";
+}
+
+
//===----------------------------------------------------------------------===//
// External Interface declaration