From 0e5e3aacbe5dc069187b94896f5844f8dfbb44c5 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Tue, 24 Oct 2006 20:15:21 +0000
Subject: [PATCH] expand ISD::VACOPY

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31170 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/ARMISelDAGToDAG.cpp |  1 +
 test/CodeGen/ARM/vargs2.ll         | 52 ++++++++++++++++++++----------
 2 files changed, 36 insertions(+), 17 deletions(-)

diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index 43f54acd1ce..b57bf59c227 100644
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -89,6 +89,7 @@ ARMTargetLowering::ARMTargetLowering(TargetMachine &TM)
   setOperationAction(ISD::UREM,      MVT::i32, Expand);
 
   setOperationAction(ISD::VASTART,       MVT::Other, Custom);
+  setOperationAction(ISD::VACOPY,            MVT::Other, Expand);
   setOperationAction(ISD::VAEND,         MVT::Other, Expand);
 
   setOperationAction(ISD::ConstantFP, MVT::f64, Expand);
diff --git a/test/CodeGen/ARM/vargs2.ll b/test/CodeGen/ARM/vargs2.ll
index 7f8d82ea2aa..232149cc8dc 100644
--- a/test/CodeGen/ARM/vargs2.ll
+++ b/test/CodeGen/ARM/vargs2.ll
@@ -1,33 +1,51 @@
 ; RUN: llvm-as < %s | llc -march=arm
-%str = internal constant [4 x sbyte] c"%d\0A\00"		; <[4 x sbyte]*> [#uses=1]
+%str = internal constant [7 x ubyte] c"%d %d\0A\00"		; <[7 x ubyte]*> [#uses=1]
 
 implementation   ; Functions:
 
 void %f(int %a, ...) {
 entry:
-	%va = alloca sbyte*, align 4		; <sbyte**> [#uses=4]
-	call void %llvm.va_start( sbyte** %va )
-	br label %bb
+	%a = cast int %a to uint		; <uint> [#uses=1]
+	%l1 = alloca sbyte*, align 4		; <sbyte**> [#uses=5]
+	%l2 = alloca sbyte*, align 4		; <sbyte**> [#uses=4]
+	%memtmp = alloca sbyte*		; <sbyte**> [#uses=2]
+	call void %llvm.va_start( sbyte** %l1 )
+	%tmp22 = seteq int %a, 0		; <bool> [#uses=1]
+	%tmp23 = volatile load sbyte** %l1		; <sbyte*> [#uses=2]
+	br bool %tmp22, label %bb8, label %bb
 
 bb:		; preds = %bb, %entry
-	%a_addr.0 = phi int [ %a, %entry ], [ %tmp5, %bb ]		; <int> [#uses=2]
-	%tmp = volatile load sbyte** %va		; <sbyte*> [#uses=2]
-	%tmp2 = getelementptr sbyte* %tmp, int 4		; <sbyte*> [#uses=1]
-	volatile store sbyte* %tmp2, sbyte** %va
-	%tmp5 = add int %a_addr.0, -1		; <int> [#uses=1]
-	%tmp = seteq int %a_addr.0, 1		; <bool> [#uses=1]
-	br bool %tmp, label %bb7, label %bb
-
-bb7:		; preds = %bb
-	%tmp3 = cast sbyte* %tmp to int*		; <int*> [#uses=1]
+	%indvar = phi uint [ 0, %entry ], [ %indvar.next, %bb ]		; <uint> [#uses=1]
+	%tmp.0 = phi sbyte* [ %tmp23, %entry ], [ %tmp, %bb ]		; <sbyte*> [#uses=2]
+	%tmp2 = getelementptr sbyte* %tmp.0, int 4		; <sbyte*> [#uses=1]
+	volatile store sbyte* %tmp2, sbyte** %l1
+	%tmp3 = cast sbyte* %tmp.0 to int*		; <int*> [#uses=1]
 	%tmp = load int* %tmp3		; <int> [#uses=1]
-	%tmp10 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([4 x sbyte]* %str, int 0, uint 0), int %tmp )		; <int> [#uses=0]
-	call void %llvm.va_end( sbyte** %va )
+	%tmp = volatile load sbyte** %l1		; <sbyte*> [#uses=2]
+	%indvar.next = add uint %indvar, 1		; <uint> [#uses=2]
+	%exitcond = seteq uint %indvar.next, %a		; <bool> [#uses=1]
+	br bool %exitcond, label %bb8, label %bb
+
+bb8:		; preds = %bb, %entry
+	%p1.0.1 = phi int [ undef, %entry ], [ %tmp, %bb ]		; <int> [#uses=1]
+	%tmp.1 = phi sbyte* [ %tmp23, %entry ], [ %tmp, %bb ]		; <sbyte*> [#uses=1]
+	store sbyte* %tmp.1, sbyte** %memtmp
+	call void %llvm.va_copy( sbyte** %l2, sbyte** %memtmp )
+	%tmp10 = volatile load sbyte** %l2		; <sbyte*> [#uses=2]
+	%tmp12 = getelementptr sbyte* %tmp10, int 4		; <sbyte*> [#uses=1]
+	volatile store sbyte* %tmp12, sbyte** %l2
+	%tmp13 = cast sbyte* %tmp10 to int*		; <int*> [#uses=1]
+	%tmp14 = load int* %tmp13		; <int> [#uses=1]
+	%tmp17 = call int (ubyte*, ...)* %printf( ubyte* getelementptr ([7 x ubyte]* %str, int 0, uint 0), int %p1.0.1, int %tmp14 )		; <int> [#uses=0]
+	call void %llvm.va_end( sbyte** %l1 )
+	call void %llvm.va_end( sbyte** %l2 )
 	ret void
 }
 
 declare void %llvm.va_start(sbyte**)
 
-declare int %printf(sbyte*, ...)
+declare void %llvm.va_copy(sbyte**, sbyte**)
+
+declare int %printf(ubyte*, ...)
 
 declare void %llvm.va_end(sbyte**)
-- 
2.34.1