Subzero: Basic unconditional branch for Mips.

tests_lit/llvm2ice_tests/uncond_br.ll

Index: tests_lit/llvm2ice_tests/uncond_br.ll
diff --git a/tests_lit/llvm2ice_tests/uncond_br.ll b/tests_lit/llvm2ice_tests/uncond_br.ll
new file mode 100644
index 0000000000000000000000000000000000000000..03de25386d34313a232943a08319c1478248c15d
--- /dev/null
+++ b/tests_lit/llvm2ice_tests/uncond_br.ll
@@ -0,0 +1,31 @@
+; TODO(rkotler): Stop skipping unimplemented parts (via --skip-unimplemented)
+; once enough infrastructure is in. Also, switch to --filetype=obj
+; when possible.
+; RUN: %if --need=target_MIPS32 --need=allow_dump \
+; RUN:   --command %p2i --filetype=asm --assemble \
+; RUN:   --disassemble --target mips32 -i %s --args -O2 --skip-unimplemented \
+; RUN:   -allow-externally-defined-symbols \
+; RUN:   | %if --need=target_MIPS32 --need=allow_dump \
+; RUN:   --command FileCheck --check-prefix MIPS32 %s
+
+define internal void @uncond1(i32 %i) {
+  %1 = alloca i8, i32 4, align 4
+  %.bc = bitcast i8* %1 to i32*
+  store i32 %i, i32* %.bc, align 1
+  br label %target
+; <label>:target
+target:
+  %.bc1 = bitcast i8* %1 to i32*
+  %2 = load i32, i32* %.bc1, align 1
+  %3 = add i32 %2, 1
+  %.bc2 = bitcast i8* %1 to i32*
+  store i32 %3, i32* %.bc2, align 1
+  br label %target
+}
+
+; MIPS32-LABEL: uncond1
+; MIPS32:   b  8 <.Luncond1$target>
+; MIPS32: <.Luncond1$target>:
+; MIPS32: li
+; MIPS32: addu
+; MIPS32: b 8 <.Luncond1$target>