[llvm-commits] [llvm] r58608 - in /llvm/trunk: lib/CodeGen/SelectionDAG/LegalizeDAG.cpp test/CodeGen/X86/2008-11-03-F80VAARG.ll

[Duncan Sands]

Author: baldrick
Date: Mon Nov  3 05:51:11 2008
New Revision: 58608

URL: http://llvm.org/viewvc/llvm-project?rev=58608&view=rev
Log:
Make VAARG work with x86 long double (which is
10 bytes long, but is passed in 12/16 bytes).

Added:
    llvm/trunk/test/CodeGen/X86/2008-11-03-F80VAARG.ll
Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=58608&r1=58607&r2=58608&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Mon Nov  3 05:51:11 2008
@@ -3438,9 +3438,9 @@
       const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue();
       SDValue VAList = DAG.getLoad(TLI.getPointerTy(), Tmp1, Tmp2, V, 0);
       // Increment the pointer, VAList, to the next vaarg
-      Tmp3 = DAG.getNode(ISD::ADD, TLI.getPointerTy(), VAList, 
-                         DAG.getConstant(VT.getSizeInBits()/8,
-                                         TLI.getPointerTy()));
+      Tmp3 = DAG.getNode(ISD::ADD, TLI.getPointerTy(), VAList,
+        DAG.getConstant(TLI.getTargetData()->getABITypeSize(VT.getTypeForMVT()),
+                        TLI.getPointerTy()));
       // Store the incremented VAList to the legalized pointer
       Tmp3 = DAG.getStore(VAList.getValue(1), Tmp3, Tmp2, V, 0);
       // Load the actual argument out of the pointer VAList

Added: llvm/trunk/test/CodeGen/X86/2008-11-03-F80VAARG.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/2008-11-03-F80VAARG.ll?rev=58608&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/2008-11-03-F80VAARG.ll (added)
+++ llvm/trunk/test/CodeGen/X86/2008-11-03-F80VAARG.ll Mon Nov  3 05:51:11 2008
@@ -0,0 +1,17 @@
+; RUN: llvm-as < %s | llc -march=x86 -o - | not grep 10
+
+declare void @llvm.va_start(i8*) nounwind
+
+declare void @llvm.va_copy(i8*, i8*) nounwind
+
+declare void @llvm.va_end(i8*) nounwind
+
+define x86_fp80 @test(...) nounwind {
+	%ap = alloca i8*		; <i8**> [#uses=3]
+	%v1 = bitcast i8** %ap to i8*		; <i8*> [#uses=1]
+	call void @llvm.va_start(i8* %v1)
+	%t1 = va_arg i8** %ap, x86_fp80		; <x86_fp80> [#uses=1]
+	%t2 = va_arg i8** %ap, x86_fp80		; <x86_fp80> [#uses=1]
+	%t = add x86_fp80 %t1, %t2		; <x86_fp80> [#uses=1]
+	ret x86_fp80 %t
+}