Implements simple returns and call args for Mips.

tests_lit/llvm2ice_tests/int-arg.ll

Index: tests_lit/llvm2ice_tests/int-arg.ll
diff --git a/tests_lit/llvm2ice_tests/int-arg.ll b/tests_lit/llvm2ice_tests/int-arg.ll
index 76c2abe535b3d08e6655755bf36b05edc90e9584..8fe96196e0f9e531c393918d37d4d079755af317 100644
--- a/tests_lit/llvm2ice_tests/int-arg.ll
+++ b/tests_lit/llvm2ice_tests/int-arg.ll
@@ -14,6 +14,15 @@
 ; RUN:   | %if --need=target_ARM32 --need=allow_dump \
 ; RUN:   --command FileCheck --check-prefix ARM32 %s
 
+; 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:   | %if --need=target_MIPS32 --need=allow_dump \
+; RUN:   --command FileCheck --check-prefix MIPS32 %s
+
 ; For x86-32, integer arguments use the stack.
 ; For ARM32, integer arguments can be r0-r3. i64 arguments occupy two
 ; adjacent 32-bit registers, and require the first to be an even register.
@@ -30,6 +39,9 @@ entry:
 ; CHECK-NEXT: ret
 ; ARM32-LABEL: test_returning32_arg0
 ; ARM32-NEXT: bx lr
+; MIPS32-LABEL: <test_returning32_arg0>
+; MIPS32: move	v0,a0
+; MIPS32-NEXT: jr	ra
 
 define i32 @test_returning32_arg1(i32 %arg0, i32 %arg1, i32 %arg2, i32 %arg3, i32 %arg4, i32 %arg5, i32 %arg6, i32 %arg7) {
 entry:
@@ -41,7 +53,9 @@ entry:
 ; ARM32-LABEL: test_returning32_arg1
 ; ARM32-NEXT: mov r0, r1
 ; ARM32-NEXT: bx lr
-
+; MIPS32-LABEL: <test_returning32_arg1>
+; MIPS32: move	v0,a1

[Jim Stichnoth, 2015/10/18 11:48:40]

remove tab characters

[rkotlerimgtec, 2015/10/19 00:12:01]

Done.

+; MIPS32-NEXT: jr	ra
 
 define i32 @test_returning32_arg2(i32 %arg0, i32 %arg1, i32 %arg2, i32 %arg3, i32 %arg4, i32 %arg5, i32 %arg6, i32 %arg7) {
 entry:
@@ -53,6 +67,9 @@ entry:
 ; ARM32-LABEL: test_returning32_arg2
 ; ARM32-NEXT: mov r0, r2
 ; ARM32-NEXT: bx lr
+; MIPS32-LABEL: <test_returning32_arg2>
+; MIPS32: move	v0,a2
+; MIPS32-NEXT: jr	ra
 
 
 define i32 @test_returning32_arg3(i32 %arg0, i32 %arg1, i32 %arg2, i32 %arg3, i32 %arg4, i32 %arg5, i32 %arg6, i32 %arg7) {
@@ -102,6 +119,10 @@ entry:
 ; CHECK: ret
 ; ARM32-LABEL: test_returning64_arg0
 ; ARM32-NEXT: bx lr
+; MIPS32-LABEL: <test_returning64_arg0>
+; MIPS32-NEXT: move	v0,a0
+; MIPS32-NEXT: move	v1,a1
+
 
 define i64 @test_returning64_arg1(i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3) {
 entry:
@@ -115,6 +136,9 @@ entry:
 ; ARM32-NEXT: mov r0, r2
 ; ARM32-NEXT: mov r1, r3
 ; ARM32-NEXT: bx lr
+; MIPS32-LABEL: <test_returning64_arg1>
+; MIPS32-NEXT: move	v0,a2
+; MIPS32-NEXT: move	v1,a3
 
 define i64 @test_returning64_arg2(i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3) {
 entry: