From a0e87b0a97fadd54540ec7e8331b61bebd82d378 Mon Sep 17 00:00:00 2001
From: Alexey Frunze <Alexey.Frunze@imgtec.com>
Date: Thu, 24 Sep 2015 22:57:20 -0700
Subject: MIPS64: Support short and long branches

Change-Id: I618c960bd211048166d9fde78d4106bd3ca42b3a
---
 compiler/optimizing/optimizing_cfi_test.cc | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'compiler/optimizing/optimizing_cfi_test.cc')

diff --git a/compiler/optimizing/optimizing_cfi_test.cc b/compiler/optimizing/optimizing_cfi_test.cc
index 34f1fe5949..2b0d522b31 100644
--- a/compiler/optimizing/optimizing_cfi_test.cc
+++ b/compiler/optimizing/optimizing_cfi_test.cc
@@ -25,6 +25,7 @@
 #include "utils/assembler.h"
 #include "utils/arm/assembler_thumb2.h"
 #include "utils/mips/assembler_mips.h"
+#include "utils/mips64/assembler_mips64.h"
 
 #include "optimizing/optimizing_cfi_test_expected.inc"
 
@@ -212,6 +213,34 @@ TEST_F(OptimizingCFITest, kMipsAdjust) {
   Check(kMips, "kMips_adjust", expected_asm, expected_cfi);
 }
 
+TEST_F(OptimizingCFITest, kMips64Adjust) {
+  // One NOP in forbidden slot, 1 << 15 NOPS have size 1 << 17 which exceeds 18-bit signed maximum.
+  static constexpr size_t kNumNops = 1u + (1u << 15);
+  std::vector<uint8_t> expected_asm(
+      expected_asm_kMips64_adjust_head,
+      expected_asm_kMips64_adjust_head + arraysize(expected_asm_kMips64_adjust_head));
+  expected_asm.resize(expected_asm.size() + kNumNops * 4u, 0u);
+  expected_asm.insert(
+      expected_asm.end(),
+      expected_asm_kMips64_adjust_tail,
+      expected_asm_kMips64_adjust_tail + arraysize(expected_asm_kMips64_adjust_tail));
+  std::vector<uint8_t> expected_cfi(
+      expected_cfi_kMips64_adjust,
+      expected_cfi_kMips64_adjust + arraysize(expected_cfi_kMips64_adjust));
+  SetUpFrame(kMips64);
+#define __ down_cast<mips64::Mips64Assembler*>(GetCodeGenerator()->GetAssembler())->
+  mips64::Mips64Label target;
+  __ Beqc(mips64::A1, mips64::A2, &target);
+  // Push the target out of range of BEQC.
+  for (size_t i = 0; i != kNumNops; ++i) {
+    __ Nop();
+  }
+  __ Bind(&target);
+#undef __
+  Finish();
+  Check(kMips64, "kMips64_adjust", expected_asm, expected_cfi);
+}
+
 #endif  // __ANDROID__
 
 }  // namespace art
-- 
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