1. Redo mips16 instructions to avoid multiple opcodes for same instruction.
Change these to patterns.
2. Add another 16 instructions.

Patch by Reed Kotler.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161272 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Mips/neg1.ll b/test/CodeGen/Mips/neg1.ll
new file mode 100644
index 0000000..281e626
--- /dev/null
+++ b/test/CodeGen/Mips/neg1.ll
@@ -0,0 +1,15 @@
+; RUN: llc  -march=mipsel -mcpu=mips16 -relocation-model=pic -O3 < %s | FileCheck %s -check-prefix=16
+
+@i = global i32 10, align 4
+@.str = private unnamed_addr constant [5 x i8] c"%i \0A\00", align 1
+
+define i32 @main() nounwind {
+entry:
+  %0 = load i32* @i, align 4
+  %sub = sub nsw i32 0, %0
+; 16:	neg	${{[0-9]+}}, ${{[0-9]+}}
+  %call = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([5 x i8]* @.str, i32 0, i32 0), i32 %sub)
+  ret i32 0
+}
+
+declare i32 @printf(i8*, ...)