Handle multi-value inputs
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62069 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index fd01905..edccbe4 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -19,6 +19,7 @@
#include "llvm/ADT/StringExtras.h"
#include "llvm/InlineAsm.h"
#include "llvm/Intrinsics.h"
+#include "llvm/Target/TargetData.h"
using namespace clang;
using namespace CodeGen;
@@ -867,12 +868,24 @@
{
llvm::Value *Arg;
if ((Info & TargetInfo::CI_AllowsRegister) ||
- !(Info & TargetInfo::CI_AllowsMemory)) {
- if (ConvertType(InputExpr->getType())->isSingleValueType()) {
+ !(Info & TargetInfo::CI_AllowsMemory)) {
+ const llvm::Type *Ty = ConvertType(InputExpr->getType());
+
+ if (Ty->isSingleValueType()) {
Arg = EmitScalarExpr(InputExpr);
} else {
- ErrorUnsupported(&S,
- "asm statement passing multiple-value types as inputs");
+ LValue Dest = EmitLValue(InputExpr);
+
+ uint64_t Size = CGM.getTargetData().getTypeSizeInBits(Ty);
+ if (Size <= 64 && llvm::isPowerOf2_64(Size)) {
+ Ty = llvm::IntegerType::get(Size);
+ Ty = llvm::PointerType::getUnqual(Ty);
+
+ Arg = Builder.CreateLoad(Builder.CreateBitCast(Dest.getAddress(), Ty));
+ } else {
+ Arg = Dest.getAddress();
+ ConstraintStr += '*';
+ }
}
} else {
LValue Dest = EmitLValue(InputExpr);
@@ -964,7 +977,7 @@
TargetInfo::ConstraintInfo Info;
bool result = Target.validateInputConstraint(InputConstraint.c_str(),
- NumConstraints, Info);
+ NumConstraints, Info);
assert(result && "Failed to parse input constraint"); result=result;
if (i != 0 || S.getNumOutputs() > 0)