From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 22 Jan 2008 23:26:53 +0000 (+0000)
Subject: SSE varargs arguments are passed in memory.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=2cbdd27305ef23a8e3b5aa320c2a7c67993d3b60;p=oota-llvm.git

SSE varargs arguments are passed in memory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46262 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86CallingConv.td b/lib/Target/X86/X86CallingConv.td
index 1bfd021b365..4d674f73ce8 100644
--- a/lib/Target/X86/X86CallingConv.td
+++ b/lib/Target/X86/X86CallingConv.td
@@ -190,8 +190,8 @@ def CC_X86_32_Common : CallingConv<[
   CCIfType<[f80], CCAssignToStack<0, 4>>,
 
   // The first 4 vector arguments are passed in XMM registers.
-  CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
-              CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>,
+  CCIfNotVarArg<CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
+                CCAssignToReg<[XMM0, XMM1, XMM2, XMM3]>>>,
 
   // Other vectors get 16-byte stack slots that are 16-byte aligned.
   CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToStack<16, 16>>,
diff --git a/test/CodeGen/X86/sse-varargs.ll b/test/CodeGen/X86/sse-varargs.ll
new file mode 100644
index 00000000000..806126da2fa
--- /dev/null
+++ b/test/CodeGen/X86/sse-varargs.ll
@@ -0,0 +1,9 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep xmm | grep esp
+
+define i32 @t() nounwind  {
+entry:
+	tail call void (i32, ...)* @foo( i32 1, <4 x i32> < i32 10, i32 11, i32 12, i32 13 > ) nounwind 
+	ret i32 0
+}
+
+declare void @foo(i32, ...)