cmd/internal/obj/arm64: encode large constants into MOVZ/MOVN and MOVK instructions

Current assembler gets large constants from constant pool, this CL gets rid of the pool by using MOVZ/MOVN and MOVK to load large constants. This CL changes the assembler behavior as follows. 1. go assembly 1, MOVD $0x1111222233334444, R1 2, MOVD $0x1111ffff1111ffff, R1 previous version: MOVD 0x9a4, R1 (loads constant from pool). optimized version: 1, MOVD $0x4444, R1; MOVK $(0x3333<<16), R1; MOVK $(0x2222<<32), R1; MOVK $(0x1111<<48), R1. 2, MOVN $(0xeeee<<16), R1; MOVK $(0x1111<<48), R1. Add test cases, and below are binary size comparison and bechmark results. 1. Binary size before/after binary size change pkg/linux_arm64 +25.4KB pkg/tool/linux_arm64 -2.9KB go -2KB gofmt no change 2. compiler benchmark. name old time/op new time/op delta Template 574ms ±21% 577ms ±14% ~ (p=0.853 n=10+10) Unicode 327ms ±29% 353ms ±23% ~ (p=0.360 n=10+8) GoTypes 1.97s ± 8% 2.04s ±11% ~ (p=0.143 n=10+10) Compiler 9.13s ± 9% 9.25s ± 8% ~ (p=0.684 n=10+10) SSA 29.2s ± 5% 27.0s ± 4% -7.40% (p=0.000 n=10+10) Flate 402ms ±40% 308ms ± 6% -23.29% (p=0.004 n=10+10) GoParser 470ms ±26% 382ms ±10% -18.82% (p=0.000 n=9+10) Reflect 1.36s ±16% 1.17s ± 7% -13.92% (p=0.001 n=9+10) Tar 561ms ±19% 466ms ±15% -17.08% (p=0.000 n=9+10) XML 745ms ±20% 679ms ±20% ~ (p=0.123 n=10+10) StdCmd 35.5s ± 6% 37.2s ± 3% +4.81% (p=0.001 n=9+8) name old user-time/op new user-time/op delta Template 625ms ±14% 660ms ±18% ~ (p=0.343 n=10+10) Unicode 355ms ±10% 373ms ±20% ~ (p=0.346 n=9+10) GoTypes 2.39s ± 8% 2.37s ± 5% ~ (p=0.897 n=10+10) Compiler 11.1s ± 4% 11.4s ± 2% +2.63% (p=0.010 n=10+9) SSA 35.4s ± 3% 34.9s ± 2% ~ (p=0.113 n=10+9) Flate 402ms ±13% 371ms ±30% ~ (p=0.089 n=10+9) GoParser 513ms ± 8% 489ms ±24% -4.76% (p=0.039 n=9+9) Reflect 1.52s ±12% 1.41s ± 5% -7.32% (p=0.001 n=9+10) Tar 607ms ±10% 558ms ± 8% -7.96% (p=0.009 n=9+10) XML 828ms ±10% 789ms ±12% ~ (p=0.059 n=10+10) name old text-bytes new text-bytes delta HelloSize 714kB ± 0% 712kB ± 0% -0.23% (p=0.000 n=10+10) CmdGoSize 8.26MB ± 0% 8.25MB ± 0% -0.14% (p=0.000 n=10+10) name old data-bytes new data-bytes delta HelloSize 10.5kB ± 0% 10.5kB ± 0% ~ (all equal) CmdGoSize 258kB ± 0% 258kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 125kB ± 0% 125kB ± 0% ~ (all equal) CmdGoSize 146kB ± 0% 146kB ± 0% ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.18MB ± 0% 1.18MB ± 0% ~ (all equal) CmdGoSize 11.2MB ± 0% 11.2MB ± 0% -0.13% (p=0.000 n=10+10) 3. go1 benckmark. name old time/op new time/op delta BinaryTree17 6.60s ±18% 7.36s ±22% ~ (p=0.222 n=5+5) Fannkuch11 4.04s ± 0% 4.05s ± 0% ~ (p=0.421 n=5+5) FmtFprintfEmpty 91.8ns ±14% 91.2ns ± 9% ~ (p=0.667 n=5+5) FmtFprintfString 145ns ± 0% 151ns ± 6% ~ (p=0.397 n=4+5) FmtFprintfInt 169ns ± 0% 176ns ± 5% +4.14% (p=0.016 n=4+5) FmtFprintfIntInt 229ns ± 2% 243ns ± 6% ~ (p=0.143 n=5+5) FmtFprintfPrefixedInt 343ns ± 0% 350ns ± 3% +1.92% (p=0.048 n=5+5) FmtFprintfFloat 400ns ± 3% 394ns ± 3% ~ (p=0.063 n=5+5) FmtManyArgs 1.04µs ± 0% 1.05µs ± 0% +1.62% (p=0.029 n=4+4) GobDecode 13.9ms ± 4% 13.9ms ± 5% ~ (p=1.000 n=5+5) GobEncode 10.6ms ± 4% 10.6ms ± 5% ~ (p=0.421 n=5+5) Gzip 567ms ± 1% 563ms ± 4% ~ (p=0.548 n=5+5) Gunzip 60.2ms ± 1% 60.4ms ± 0% ~ (p=0.056 n=5+5) HTTPClientServer 114µs ± 4% 108µs ± 7% ~ (p=0.095 n=5+5) JSONEncode 18.4ms ± 2% 17.8ms ± 2% -3.06% (p=0.016 n=5+5) JSONDecode 105ms ± 1% 103ms ± 2% ~ (p=0.056 n=5+5) Mandelbrot200 5.48ms ± 0% 5.49ms ± 0% ~ (p=0.841 n=5+5) GoParse 6.05ms ± 1% 6.05ms ± 2% ~ (p=1.000 n=5+5) RegexpMatchEasy0_32 143ns ± 1% 146ns ± 4% +2.10% (p=0.048 n=4+5) RegexpMatchEasy0_1K 499ns ± 1% 492ns ± 2% ~ (p=0.079 n=5+5) RegexpMatchEasy1_32 137ns ± 0% 136ns ± 1% -0.73% (p=0.016 n=4+5) RegexpMatchEasy1_1K 826ns ± 4% 823ns ± 2% ~ (p=0.841 n=5+5) RegexpMatchMedium_32 224ns ± 5% 233ns ± 8% ~ (p=0.119 n=5+5) RegexpMatchMedium_1K 59.6µs ± 0% 59.3µs ± 1% -0.66% (p=0.016 n=4+5) RegexpMatchHard_32 3.29µs ± 3% 3.26µs ± 1% ~ (p=0.889 n=5+5) RegexpMatchHard_1K 98.8µs ± 2% 99.0µs ± 0% ~ (p=0.690 n=5+5) Revcomp 1.02s ± 1% 1.01s ± 1% ~ (p=0.095 n=5+5) Template 135ms ± 5% 131ms ± 1% ~ (p=0.151 n=5+5) TimeParse 591ns ± 0% 593ns ± 0% +0.20% (p=0.048 n=5+5) TimeFormat 655ns ± 2% 607ns ± 0% -7.42% (p=0.016 n=5+4) [Geo mean] 93.5µs 93.8µs +0.23% name old speed new speed delta GobDecode 55.1MB/s ± 4% 55.1MB/s ± 4% ~ (p=1.000 n=5+5) GobEncode 72.4MB/s ± 4% 72.3MB/s ± 5% ~ (p=0.421 n=5+5) Gzip 34.2MB/s ± 1% 34.5MB/s ± 4% ~ (p=0.548 n=5+5) Gunzip 322MB/s ± 1% 321MB/s ± 0% ~ (p=0.056 n=5+5) JSONEncode 106MB/s ± 2% 109MB/s ± 2% +3.16% (p=0.016 n=5+5) JSONDecode 18.5MB/s ± 1% 18.8MB/s ± 2% ~ (p=0.056 n=5+5) GoParse 9.57MB/s ± 1% 9.57MB/s ± 2% ~ (p=0.952 n=5+5) RegexpMatchEasy0_32 223MB/s ± 1% 221MB/s ± 0% -1.10% (p=0.029 n=4+4) RegexpMatchEasy0_1K 2.05GB/s ± 1% 2.08GB/s ± 2% ~ (p=0.095 n=5+5) RegexpMatchEasy1_32 232MB/s ± 0% 234MB/s ± 1% +0.76% (p=0.016 n=4+5) RegexpMatchEasy1_1K 1.24GB/s ± 4% 1.24GB/s ± 2% ~ (p=0.841 n=5+5) RegexpMatchMedium_32 4.45MB/s ± 5% 4.20MB/s ± 1% -5.63% (p=0.000 n=5+4) RegexpMatchMedium_1K 17.2MB/s ± 0% 17.3MB/s ± 1% +0.66% (p=0.016 n=4+5) RegexpMatchHard_32 9.73MB/s ± 3% 9.83MB/s ± 1% ~ (p=0.889 n=5+5) RegexpMatchHard_1K 10.4MB/s ± 2% 10.3MB/s ± 0% ~ (p=0.635 n=5+5) Revcomp 249MB/s ± 1% 252MB/s ± 1% ~ (p=0.095 n=5+5) Template 14.4MB/s ± 4% 14.8MB/s ± 1% ~ (p=0.151 n=5+5) [Geo mean] 62.1MB/s 62.3MB/s +0.34% Fixes #10108 Change-Id: I79038f3c4c2ff874c136053d1a2b1c8a5a9cfac5 Reviewed-on: https://go-review.googlesource.com/c/118796Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>

cmd/internal/obj/arm64: encode large constants into MOVZ/MOVN and MOVK instructions
Current assembler gets large constants from constant pool, this CL gets rid of the pool by using MOVZ/MOVN and MOVK to load large constants. This CL changes the assembler behavior as follows. 1. go assembly 1, MOVD $0x1111222233334444, R1 2, MOVD $0x1111ffff1111ffff, R1 previous version: MOVD 0x9a4, R1 (loads constant from pool). optimized version: 1, MOVD $0x4444, R1; MOVK $(0x3333<<16), R1; MOVK $(0x2222<<32), R1; MOVK $(0x1111<<48), R1. 2, MOVN $(0xeeee<<16), R1; MOVK $(0x1111<<48), R1. Add test cases, and below are binary size comparison and bechmark results. 1. Binary size before/after binary size change pkg/linux_arm64 +25.4KB pkg/tool/linux_arm64 -2.9KB go -2KB gofmt no change 2. compiler benchmark. name old time/op new time/op delta Template 574ms ±21% 577ms ±14% ~ (p=0.853 n=10+10) Unicode 327ms ±29% 353ms ±23% ~ (p=0.360 n=10+8) GoTypes 1.97s ± 8% 2.04s ±11% ~ (p=0.143 n=10+10) Compiler 9.13s ± 9% 9.25s ± 8% ~ (p=0.684 n=10+10) SSA 29.2s ± 5% 27.0s ± 4% -7.40% (p=0.000 n=10+10) Flate 402ms ±40% 308ms ± 6% -23.29% (p=0.004 n=10+10) GoParser 470ms ±26% 382ms ±10% -18.82% (p=0.000 n=9+10) Reflect 1.36s ±16% 1.17s ± 7% -13.92% (p=0.001 n=9+10) Tar 561ms ±19% 466ms ±15% -17.08% (p=0.000 n=9+10) XML 745ms ±20% 679ms ±20% ~ (p=0.123 n=10+10) StdCmd 35.5s ± 6% 37.2s ± 3% +4.81% (p=0.001 n=9+8) name old user-time/op new user-time/op delta Template 625ms ±14% 660ms ±18% ~ (p=0.343 n=10+10) Unicode 355ms ±10% 373ms ±20% ~ (p=0.346 n=9+10) GoTypes 2.39s ± 8% 2.37s ± 5% ~ (p=0.897 n=10+10) Compiler 11.1s ± 4% 11.4s ± 2% +2.63% (p=0.010 n=10+9) SSA 35.4s ± 3% 34.9s ± 2% ~ (p=0.113 n=10+9) Flate 402ms ±13% 371ms ±30% ~ (p=0.089 n=10+9) GoParser 513ms ± 8% 489ms ±24% -4.76% (p=0.039 n=9+9) Reflect 1.52s ±12% 1.41s ± 5% -7.32% (p=0.001 n=9+10) Tar 607ms ±10% 558ms ± 8% -7.96% (p=0.009 n=9+10) XML 828ms ±10% 789ms ±12% ~ (p=0.059 n=10+10) name old text-bytes new text-bytes delta HelloSize 714kB ± 0% 712kB ± 0% -0.23% (p=0.000 n=10+10) CmdGoSize 8.26MB ± 0% 8.25MB ± 0% -0.14% (p=0.000 n=10+10) name old data-bytes new data-bytes delta HelloSize 10.5kB ± 0% 10.5kB ± 0% ~ (all equal) CmdGoSize 258kB ± 0% 258kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 125kB ± 0% 125kB ± 0% ~ (all equal) CmdGoSize 146kB ± 0% 146kB ± 0% ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.18MB ± 0% 1.18MB ± 0% ~ (all equal) CmdGoSize 11.2MB ± 0% 11.2MB ± 0% -0.13% (p=0.000 n=10+10) 3. go1 benckmark. name old time/op new time/op delta BinaryTree17 6.60s ±18% 7.36s ±22% ~ (p=0.222 n=5+5) Fannkuch11 4.04s ± 0% 4.05s ± 0% ~ (p=0.421 n=5+5) FmtFprintfEmpty 91.8ns ±14% 91.2ns ± 9% ~ (p=0.667 n=5+5) FmtFprintfString 145ns ± 0% 151ns ± 6% ~ (p=0.397 n=4+5) FmtFprintfInt 169ns ± 0% 176ns ± 5% +4.14% (p=0.016 n=4+5) FmtFprintfIntInt 229ns ± 2% 243ns ± 6% ~ (p=0.143 n=5+5) FmtFprintfPrefixedInt 343ns ± 0% 350ns ± 3% +1.92% (p=0.048 n=5+5) FmtFprintfFloat 400ns ± 3% 394ns ± 3% ~ (p=0.063 n=5+5) FmtManyArgs 1.04µs ± 0% 1.05µs ± 0% +1.62% (p=0.029 n=4+4) GobDecode 13.9ms ± 4% 13.9ms ± 5% ~ (p=1.000 n=5+5) GobEncode 10.6ms ± 4% 10.6ms ± 5% ~ (p=0.421 n=5+5) Gzip 567ms ± 1% 563ms ± 4% ~ (p=0.548 n=5+5) Gunzip 60.2ms ± 1% 60.4ms ± 0% ~ (p=0.056 n=5+5) HTTPClientServer 114µs ± 4% 108µs ± 7% ~ (p=0.095 n=5+5) JSONEncode 18.4ms ± 2% 17.8ms ± 2% -3.06% (p=0.016 n=5+5) JSONDecode 105ms ± 1% 103ms ± 2% ~ (p=0.056 n=5+5) Mandelbrot200 5.48ms ± 0% 5.49ms ± 0% ~ (p=0.841 n=5+5) GoParse 6.05ms ± 1% 6.05ms ± 2% ~ (p=1.000 n=5+5) RegexpMatchEasy0_32 143ns ± 1% 146ns ± 4% +2.10% (p=0.048 n=4+5) RegexpMatchEasy0_1K 499ns ± 1% 492ns ± 2% ~ (p=0.079 n=5+5) RegexpMatchEasy1_32 137ns ± 0% 136ns ± 1% -0.73% (p=0.016 n=4+5) RegexpMatchEasy1_1K 826ns ± 4% 823ns ± 2% ~ (p=0.841 n=5+5) RegexpMatchMedium_32 224ns ± 5% 233ns ± 8% ~ (p=0.119 n=5+5) RegexpMatchMedium_1K 59.6µs ± 0% 59.3µs ± 1% -0.66% (p=0.016 n=4+5) RegexpMatchHard_32 3.29µs ± 3% 3.26µs ± 1% ~ (p=0.889 n=5+5) RegexpMatchHard_1K 98.8µs ± 2% 99.0µs ± 0% ~ (p=0.690 n=5+5) Revcomp 1.02s ± 1% 1.01s ± 1% ~ (p=0.095 n=5+5) Template 135ms ± 5% 131ms ± 1% ~ (p=0.151 n=5+5) TimeParse 591ns ± 0% 593ns ± 0% +0.20% (p=0.048 n=5+5) TimeFormat 655ns ± 2% 607ns ± 0% -7.42% (p=0.016 n=5+4) [Geo mean] 93.5µs 93.8µs +0.23% name old speed new speed delta GobDecode 55.1MB/s ± 4% 55.1MB/s ± 4% ~ (p=1.000 n=5+5) GobEncode 72.4MB/s ± 4% 72.3MB/s ± 5% ~ (p=0.421 n=5+5) Gzip 34.2MB/s ± 1% 34.5MB/s ± 4% ~ (p=0.548 n=5+5) Gunzip 322MB/s ± 1% 321MB/s ± 0% ~ (p=0.056 n=5+5) JSONEncode 106MB/s ± 2% 109MB/s ± 2% +3.16% (p=0.016 n=5+5) JSONDecode 18.5MB/s ± 1% 18.8MB/s ± 2% ~ (p=0.056 n=5+5) GoParse 9.57MB/s ± 1% 9.57MB/s ± 2% ~ (p=0.952 n=5+5) RegexpMatchEasy0_32 223MB/s ± 1% 221MB/s ± 0% -1.10% (p=0.029 n=4+4) RegexpMatchEasy0_1K 2.05GB/s ± 1% 2.08GB/s ± 2% ~ (p=0.095 n=5+5) RegexpMatchEasy1_32 232MB/s ± 0% 234MB/s ± 1% +0.76% (p=0.016 n=4+5) RegexpMatchEasy1_1K 1.24GB/s ± 4% 1.24GB/s ± 2% ~ (p=0.841 n=5+5) RegexpMatchMedium_32 4.45MB/s ± 5% 4.20MB/s ± 1% -5.63% (p=0.000 n=5+4) RegexpMatchMedium_1K 17.2MB/s ± 0% 17.3MB/s ± 1% +0.66% (p=0.016 n=4+5) RegexpMatchHard_32 9.73MB/s ± 3% 9.83MB/s ± 1% ~ (p=0.889 n=5+5) RegexpMatchHard_1K 10.4MB/s ± 2% 10.3MB/s ± 0% ~ (p=0.635 n=5+5) Revcomp 249MB/s ± 1% 252MB/s ± 1% ~ (p=0.095 n=5+5) Template 14.4MB/s ± 4% 14.8MB/s ± 1% ~ (p=0.151 n=5+5) [Geo mean] 62.1MB/s 62.3MB/s +0.34% Fixes #10108 Change-Id: I79038f3c4c2ff874c136053d1a2b1c8a5a9cfac5 Reviewed-on: https://go-review.googlesource.com/c/118796Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
644ddaa8 · fanzha02 · Cherry Zhang · ac277d92 · 644ddaa8 · 644ddaa8
Commit 644ddaa8 authored May 10, 2018 by fanzha02 Committed by Cherry Zhang Nov 07, 2018
Showing with 25 additions and 0 deletions

arm64.s src/cmd/asm/internal/asm/testdata/arm64.s +21 -0

a.out.go src/cmd/internal/obj/arm64/a.out.go +2 -0

anames7.go src/cmd/internal/obj/arm64/anames7.go +2 -0

asm7.go src/cmd/internal/obj/arm64/asm7.go +0 -0

No files found.
--- a/src/cmd/asm/internal/asm/testdata/arm64.s
+++ b/src/cmd/asm/internal/asm/testdata/arm64.s
@@ -195,6 +195,11 @@ TEXT	foo(SB), DUPOK|NOSPLIT, $-8
 	CMPW	$27745, R2                      // 3b8c8d525f001b6b
 	CMNW	$0x3fffffc0, R2                 // CMNW	$1073741760, R2                   // fb5f1a325f001b2b
 	CMPW	$0xffff0, R1                    // CMPW	$1048560, R1                      // fb3f1c323f001b6b
+	CMP	$0xffffffffffa0, R3             // CMP	$281474976710560, R3              // fb0b80921b00e0f27f001beb
+	CMP	$0xf4240, R1                    // CMP	$1000000, R1                      // 1b4888d2fb01a0f23f001beb
+	ADD	$0x186a0, R2, R5                // ADD	$100000, R2, R5                   // 45801a91a5604091
+	SUB	$0xe7791f700, R3, R1            // SUB	$62135596800, R3, R1              // 1be09ed23bf2aef2db01c0f261001bcb
+	CMP     $3343198598084851058, R3        // 5bae8ed2db8daef23badcdf2bbcce5f27f001beb
 	ADD	$0x3fffffffc000, R5             // ADD	$70368744161280, R5               // fb7f72b2a5001b8b
 //	LTYPE1 imsr ',' spreg ','
 //	{
@@ -240,12 +245,21 @@ TEXT	foo(SB), DUPOK|NOSPLIT, $-8

 	EOR	$0xe03fffffffffffff, R20, R22       // EOR	$-2287828610704211969, R20, R22 // 96e243d2
 	TSTW	$0x600000006, R1                    // TSTW	$25769803782, R1                // 3f041f72
+	TST	$0x4900000049, R0                   // TST	$313532612681, R0               // 3b0980d23b09c0f21f001bea
+	ORR	$0x170000, R2, R1                   // ORR	$1507328, R2, R1                // fb02a0d241001baa
+	AND	$0xff00ff, R2                       // AND	$16711935, R2                   // fb1f80d2fb1fa0f242001b8a
+	AND	$0xff00ffff, R1                     // AND	$4278255615, R1                 // fbff9fd21be0bff221001b8a
 	ANDS	$0xffff, R2                         // ANDS	$65535, R2                      // 423c40f2
 	AND	$0x7fffffff, R3                     // AND	$2147483647, R3                 // 63784092
 	ANDS	$0x0ffffffff80000000, R2            // ANDS	$-2147483648, R2                // 428061f2
 	AND	$0xfffff, R2                        // AND	$1048575, R2                    // 424c4092
 	ANDW	$0xf00fffff, R1                     // ANDW	$4027580415, R1                 // 215c0412
 	ANDSW	$0xff00ffff, R1                     // ANDSW	$4278255615, R1                 // 215c0872
+	TST	$0x11223344, R2                     // TST	$287454020, R2                  // 9b6886d25b24a2f25f001bea
+	TSTW	$0xa000, R3                         // TSTW	$40960, R3                      // 1b0094527f001b6a
+	BICW	$0xa000, R3                         // BICW	$40960, R3                      // 1b00945263003b0a
+	ORRW	$0x1b000, R2, R3                    // ORRW	$110592, R2, R3                 // 1b0096523b00a07243001b2a
+	TSTW	$0x500000, R1                       // TSTW	$5242880, R1                    // 1b0aa0523f001b6a
 	TSTW	$0xff00ff, R1                       // TSTW	$16711935, R1                   // 3f9c0072

 	AND	$8, R0, RSP // 1f007d92
@@ -256,13 +270,20 @@ TEXT	foo(SB), DUPOK|NOSPLIT, $-8
 	EON	$8, R0, RSP // 1ff87cd2

 	MOVD	$0x3fffffffc000, R0           // MOVD	$70368744161280, R0         // e07f72b2
+	MOVW	$1000000, R4                  // 04488852e401a072
 	MOVW	$0xaaaa0000, R1               // MOVW	$2863267840, R1             // 4155b552
 	MOVW	$0xaaaaffff, R1               // MOVW	$2863333375, R1             // a1aaaa12
 	MOVW	$0xaaaa, R1                   // MOVW	$43690, R1                  // 41559552
 	MOVW	$0xffffaaaa, R1               // MOVW	$4294945450, R1             // a1aa8a12
 	MOVW	$0xffff0000, R1               // MOVW	$4294901760, R1             // e1ffbf52
 	MOVD	$0xffff00000000000, R1        // MOVD	$1152903912420802560, R1    // e13f54b2
+	MOVD	$0x1111000000001111, R1       // MOVD	$1229764173248860433, R1    // 212282d22122e2f2
+	MOVD	$0x1111ffff1111ffff, R1       // MOVD	$1230045644216991743, R1    // c1ddbd922122e2f2
+	MOVD	$0x1111222233334444, R1       // MOVD	$1229801703532086340, R1    // 818888d26166a6f24144c4f22122e2f2
+	MOVD	$0xaaaaffff, R1               // MOVD	$2863333375, R1             // e1ff9fd24155b5f2
 	MOVD	$0x11110000, R1               // MOVD	$286326784, R1              // 2122a2d2
+	MOVD	$0xaaaa0000aaaa1111, R1       // MOVD	$-6149102338357718767, R1   // 212282d24155b5f24155f5f2
+	MOVD	$0x1111ffff1111aaaa, R1       // MOVD	$1230045644216969898, R1    // a1aa8a922122a2f22122e2f2
 	MOVD	$0, R1                        // 010080d2
 	MOVD	$-1, R1                       // 01008092
 	MOVD	$0x210000, R0                 // MOVD	$2162688, R0                 // 2004a0d2

--- a/src/cmd/internal/obj/arm64/a.out.go
+++ b/src/cmd/internal/obj/arm64/a.out.go
@@ -414,6 +414,8 @@ const (
 	C_BITCON   // bitfield and logical immediate masks
 	C_ADDCON2  // 24-bit constant
 	C_LCON     // 32-bit constant
+	C_MOVCON2  // a constant that can be loaded with one MOVZ/MOVN and one MOVK
+	C_MOVCON3  // a constant that can be loaded with one MOVZ/MOVN and two MOVKs
 	C_VCON     // 64-bit constant
 	C_FCON     // floating-point constant
 	C_VCONADDR // 64-bit memory address

--- a/src/cmd/internal/obj/arm64/anames7.go
+++ b/src/cmd/internal/obj/arm64/anames7.go
@@ -30,6 +30,8 @@ var cnames7 = []string{
 	"BITCON",
 	"ADDCON2",
 	"LCON",
+	"MOVCON2",
+	"MOVCON3",
 	"VCON",
 	"FCON",
 	"VCONADDR",

--- a/src/cmd/internal/obj/arm64/asm7.go
+++ b/src/cmd/internal/obj/arm64/asm7.go