From 4a6b62c4e28f60f2c551ca1b780f9c7773ac5069 Mon Sep 17 00:00:00 2001
From: TatWai Chong <tatwai.chong@arm.com>
Date: Mon, 14 Jan 2019 15:50:40 -0800
Subject: Make Fmov(Register, VRegister, index) accept index = 0.

fmov only support index = 1 in "fmov <Xd>, <Vn>.D[index]" and
"fmov <Vd>.D[index], <Xn>" encoding. In case of index = 0,
MacroAssembler should transfer fmov 64-bit value between vector
element and general-purpose register to "mov <Xd> <Vn>.D[0]" and
"mov <Vd>D[0], <Xn>" respectively.

Change-Id: I5309f0376584e2806f2ee6e8871743d1b31e226f
---
 test/aarch64/test-assembler-aarch64.cc | 5 +++++
 test/aarch64/test-disasm-aarch64.cc    | 5 +++++
 2 files changed, 10 insertions(+)

(limited to 'test/aarch64')

diff --git a/test/aarch64/test-assembler-aarch64.cc b/test/aarch64/test-assembler-aarch64.cc
index 20f4057f..5354d17b 100644
--- a/test/aarch64/test-assembler-aarch64.cc
+++ b/test/aarch64/test-assembler-aarch64.cc
@@ -10782,6 +10782,9 @@ TEST(fmov_reg) {
   __ Fmov(d0, 0.0);
   __ Fmov(v0.D(), 1, x1);
   __ Fmov(x2, v0.D(), 1);
+  __ Fmov(v3.D(), 1, x4);
+  __ Fmov(v3.D(), 0, x1);
+  __ Fmov(x5, v1.D(), 0);
 
   END();
 #ifdef VIXL_INCLUDE_SIMULATOR_AARCH64
@@ -10801,6 +10804,8 @@ TEST(fmov_reg) {
   ASSERT_EQUAL_FP32(RawbitsToFloat(0x89abcdef), s6);
   ASSERT_EQUAL_128(DoubleToRawbits(-13.0), 0x0000000000000000, q0);
   ASSERT_EQUAL_64(DoubleToRawbits(-13.0), x2);
+  ASSERT_EQUAL_128(0x0000000000006400, DoubleToRawbits(-13.0), q3);
+  ASSERT_EQUAL_64(DoubleToRawbits(-13.0), x5);
 #endif
 
   TEARDOWN();
diff --git a/test/aarch64/test-disasm-aarch64.cc b/test/aarch64/test-disasm-aarch64.cc
index 2dfedfc6..61031829 100644
--- a/test/aarch64/test-disasm-aarch64.cc
+++ b/test/aarch64/test-disasm-aarch64.cc
@@ -6377,6 +6377,11 @@ TEST(neon_modimm) {
   COMPARE_MACRO(Fmov(v0.V4H(), Float16(-5.0)), "fmov v0.4h, #0x94 (-5.0000)");
   COMPARE_MACRO(Fmov(v31.V8H(), Float16(29.0)), "fmov v31.8h, #0x3d (29.0000)");
 
+  COMPARE_MACRO(Fmov(v5.D(), 1, x14), "fmov v5.D[1], x14");
+  COMPARE_MACRO(Fmov(x14, v5.D(), 1), "fmov x14, v5.D[1]");
+  COMPARE_MACRO(Fmov(v3.D(), 0, x21), "mov v3.d[0], x21");
+  COMPARE_MACRO(Fmov(x21, v3.D(), 0), "mov x21, v3.d[0]");
+
   // An unallocated form of fmov.
   COMPARE(dci(0x2f07ffff), "unallocated (Unallocated)");
 
-- 
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