Rebased PNaCl localmods in LLVM to 223109

test/CodeGen/X86/invalid-gcc-snan-conversion.ll

Index: test/CodeGen/X86/invalid-gcc-snan-conversion.ll
diff --git a/test/CodeGen/X86/invalid-gcc-snan-conversion.ll b/test/CodeGen/X86/invalid-gcc-snan-conversion.ll
new file mode 100644
index 0000000000000000000000000000000000000000..416f0c0b83a1b67969e586cf273a51931a7eed70
--- /dev/null
+++ b/test/CodeGen/X86/invalid-gcc-snan-conversion.ll
@@ -0,0 +1,25 @@
+; If LLVM is built in Release mode with a buggy gcc under x86-32, it
+; may transform 64-bit constants with a signaling NaN bit pattern into
+; a quiet NaN bit pattern.  See
+; http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58416
+ 
+; RUN: llc -march=x86-64 < %s | FileCheck %s
+
+define i32 @main() #0 {
+entry:
+  %retval = alloca i32, align 4
+  %tmp = alloca i64, align 8
+  store i32 0, i32* %retval
+; -4503599627370495 == 0xfff0000000000001
+  store i64 -4503599627370495, i64* %tmp, align 8
+  %0 = load i64* %tmp, align 8
+  call void @Consume(i64 %0)
+  ret i32 0
+}
+
+; CHECK: main:
+; make sure 0xfff0000000000001 didn't change to 0xfff8000000000001
+; CHECK: 0xFFF00000
+; CHECK-NOT: 0xFFF80000
+
+declare void @Consume(i64) #1