From 3f142c36ad04c1aabac90df6a866bd2b0767f24f Mon Sep 17 00:00:00 2001
From: Torok Edwin <edwintorok@gmail.com>
Date: Sun, 1 Feb 2009 18:15:56 +0000
Subject: Implement -mno-sse: if SSE is disabled on x86-64, don't store XMM on
 stack for var-args, and don't allow FP return values

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63495 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/nosse-varargs.ll | 46 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 test/CodeGen/X86/nosse-varargs.ll

(limited to 'test/CodeGen/X86/nosse-varargs.ll')

diff --git a/test/CodeGen/X86/nosse-varargs.ll b/test/CodeGen/X86/nosse-varargs.ll
new file mode 100644
index 0000000000..e6da0ab5e3
--- /dev/null
+++ b/test/CodeGen/X86/nosse-varargs.ll
@@ -0,0 +1,46 @@
+; RUN: llvm-as < %s > %t
+; RUN: llc -march=x86-64 -mattr=-sse < %t | not grep xmm
+; RUN: llc -march=x86-64 < %t | grep xmm
+; PR3403
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-unknown-linux-gnu"
+	%struct.__va_list_tag = type { i32, i32, i8*, i8* }
+
+define i32 @foo(float %a, i8* nocapture %fmt, ...) nounwind {
+entry:
+	%ap = alloca [1 x %struct.__va_list_tag], align 8		; <[1 x %struct.__va_list_tag]*> [#uses=4]
+	%ap12 = bitcast [1 x %struct.__va_list_tag]* %ap to i8*		; <i8*> [#uses=2]
+	call void @llvm.va_start(i8* %ap12)
+	%0 = getelementptr [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0, i32 0		; <i32*> [#uses=2]
+	%1 = load i32* %0, align 8		; <i32> [#uses=3]
+	%2 = icmp ult i32 %1, 48		; <i1> [#uses=1]
+	br i1 %2, label %bb, label %bb3
+
+bb:		; preds = %entry
+	%3 = getelementptr [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0, i32 3		; <i8**> [#uses=1]
+	%4 = load i8** %3, align 8		; <i8*> [#uses=1]
+	%5 = inttoptr i32 %1 to i8*		; <i8*> [#uses=1]
+	%6 = ptrtoint i8* %5 to i64		; <i64> [#uses=1]
+	%ctg2 = getelementptr i8* %4, i64 %6		; <i8*> [#uses=1]
+	%7 = add i32 %1, 8		; <i32> [#uses=1]
+	store i32 %7, i32* %0, align 8
+	br label %bb4
+
+bb3:		; preds = %entry
+	%8 = getelementptr [1 x %struct.__va_list_tag]* %ap, i64 0, i64 0, i32 2		; <i8**> [#uses=2]
+	%9 = load i8** %8, align 8		; <i8*> [#uses=2]
+	%10 = getelementptr i8* %9, i64 8		; <i8*> [#uses=1]
+	store i8* %10, i8** %8, align 8
+	br label %bb4
+
+bb4:		; preds = %bb3, %bb
+	%addr.0.0 = phi i8* [ %ctg2, %bb ], [ %9, %bb3 ]		; <i8*> [#uses=1]
+	%11 = bitcast i8* %addr.0.0 to i32*		; <i32*> [#uses=1]
+	%12 = load i32* %11, align 4		; <i32> [#uses=1]
+	call void @llvm.va_end(i8* %ap12)
+	ret i32 %12
+}
+
+declare void @llvm.va_start(i8*) nounwind
+
+declare void @llvm.va_end(i8*) nounwind
-- 
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