test/codegen: simplify asmcheck pattern matching

Separate patterns in asmcheck by spaces instead of commas.
Many patterns end in comma (like "MOV [$]123,") so separating
patterns by comma is not great; they're already quoted, so spaces are fine.

Also replace all tabs in the assembly lines with spaces before matching.
Finally, replace \$ or \\$ with [$] as the matching idiom.
The effect of all these is to make the patterns look like:

  	   // amd64:"BSFQ" "ORQ [$]256"

instead of the old:

  	   // amd64:"BSFQ","ORQ\t\\$256"

Update all tests as well.

Change-Id: Ia39febe5d7f67ba115846422789e11b185d5c807
Reviewed-on: https://go-review.googlesource.com/c/go/+/716060
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>

1 files changed, 232 insertions, 232 deletions

diff --git a/test/codegen/arithmetic.go b/test/codegen/arithmetic.go
index 7055db3dc9..ef7c5d92aa 100644
--- a/test/codegen/arithmetic.go
+++ b/test/codegen/arithmetic.go
@@ -15,44 +15,44 @@ package codegen
 // ----------------- //
 
 func AddLargeConst(a uint64, out []uint64) {
-	// ppc64x/power10:"ADD\t[$]4294967296,"
-	// ppc64x/power9:"MOVD\t[$]1", "SLD\t[$]32" "ADD\tR[0-9]*"
-	// ppc64x/power8:"MOVD\t[$]1", "SLD\t[$]32" "ADD\tR[0-9]*"
+	// ppc64x/power10:"ADD [$]4294967296,"
+	// ppc64x/power9:"MOVD [$]1", "SLD [$]32" "ADD R[0-9]*"
+	// ppc64x/power8:"MOVD [$]1", "SLD [$]32" "ADD R[0-9]*"
 	out[0] = a + 0x100000000
-	// ppc64x/power10:"ADD\t[$]-8589934592,"
-	// ppc64x/power9:"MOVD\t[$]-1", "SLD\t[$]33" "ADD\tR[0-9]*"
-	// ppc64x/power8:"MOVD\t[$]-1", "SLD\t[$]33" "ADD\tR[0-9]*"
+	// ppc64x/power10:"ADD [$]-8589934592,"
+	// ppc64x/power9:"MOVD [$]-1", "SLD [$]33" "ADD R[0-9]*"
+	// ppc64x/power8:"MOVD [$]-1", "SLD [$]33" "ADD R[0-9]*"
 	out[1] = a + 0xFFFFFFFE00000000
-	// ppc64x/power10:"ADD\t[$]1234567,"
-	// ppc64x/power9:"ADDIS\t[$]19,", "ADD\t[$]-10617,"
-	// ppc64x/power8:"ADDIS\t[$]19,", "ADD\t[$]-10617,"
+	// ppc64x/power10:"ADD [$]1234567,"
+	// ppc64x/power9:"ADDIS [$]19,", "ADD [$]-10617,"
+	// ppc64x/power8:"ADDIS [$]19,", "ADD [$]-10617,"
 	out[2] = a + 1234567
-	// ppc64x/power10:"ADD\t[$]-1234567,"
-	// ppc64x/power9:"ADDIS\t[$]-19,", "ADD\t[$]10617,"
-	// ppc64x/power8:"ADDIS\t[$]-19,", "ADD\t[$]10617,"
+	// ppc64x/power10:"ADD [$]-1234567,"
+	// ppc64x/power9:"ADDIS [$]-19,", "ADD [$]10617,"
+	// ppc64x/power8:"ADDIS [$]-19,", "ADD [$]10617,"
 	out[3] = a - 1234567
-	// ppc64x/power10:"ADD\t[$]2147450879,"
-	// ppc64x/power9:"ADDIS\t[$]32767,", "ADD\t[$]32767,"
-	// ppc64x/power8:"ADDIS\t[$]32767,", "ADD\t[$]32767,"
+	// ppc64x/power10:"ADD [$]2147450879,"
+	// ppc64x/power9:"ADDIS [$]32767,", "ADD [$]32767,"
+	// ppc64x/power8:"ADDIS [$]32767,", "ADD [$]32767,"
 	out[4] = a + 0x7FFF7FFF
-	// ppc64x/power10:"ADD\t[$]-2147483647,"
-	// ppc64x/power9:"ADDIS\t[$]-32768,", "ADD\t[$]1,"
-	// ppc64x/power8:"ADDIS\t[$]-32768,", "ADD\t[$]1,"
+	// ppc64x/power10:"ADD [$]-2147483647,"
+	// ppc64x/power9:"ADDIS [$]-32768,", "ADD [$]1,"
+	// ppc64x/power8:"ADDIS [$]-32768,", "ADD [$]1,"
 	out[5] = a - 2147483647
-	// ppc64x:"ADDIS\t[$]-32768,", ^"ADD\t"
+	// ppc64x:"ADDIS [$]-32768,", ^"ADD "
 	out[6] = a - 2147483648
-	// ppc64x:"ADD\t[$]2147450880,", ^"ADDIS\t"
+	// ppc64x:"ADD [$]2147450880,", ^"ADDIS "
 	out[7] = a + 0x7FFF8000
-	// ppc64x:"ADD\t[$]-32768,", ^"ADDIS\t"
+	// ppc64x:"ADD [$]-32768,", ^"ADDIS "
 	out[8] = a - 32768
-	// ppc64x/power10:"ADD\t[$]-32769,"
-	// ppc64x/power9:"ADDIS\t[$]-1,", "ADD\t[$]32767,"
-	// ppc64x/power8:"ADDIS\t[$]-1,", "ADD\t[$]32767,"
+	// ppc64x/power10:"ADD [$]-32769,"
+	// ppc64x/power9:"ADDIS [$]-1,", "ADD [$]32767,"
+	// ppc64x/power8:"ADDIS [$]-1,", "ADD [$]32767,"
 	out[9] = a - 32769
 }
 
 func AddLargeConst2(a int, out []int) {
-	// loong64: -"ADDVU","ADDV16"
+	// loong64: -"ADDVU" "ADDV16"
 	out[0] = a + 0x10000
 }
 
@@ -83,65 +83,65 @@ func SubMem(arr []int, b, c, d int) int {
 	arr[b]--
 	// amd64:`DECQ\s64\([A-Z]+\)`
 	arr[8]--
-	// 386:"SUBL\t4"
-	// amd64:"SUBQ\t8"
+	// 386:"SUBL 4"
+	// amd64:"SUBQ 8"
 	return arr[0] - arr[1]
 }
 
 func SubFromConst(a int) int {
-	// ppc64x: `SUBC\tR[0-9]+,\s[$]40,\sR`
-	// riscv64: "ADDI\t\\$-40","NEG"
+	// ppc64x: `SUBC R[0-9]+,\s[$]40,\sR`
+	// riscv64: "ADDI \\$-40" "NEG"
 	b := 40 - a
 	return b
 }
 
 func SubFromConstNeg(a int) int {
-	// arm64: "ADD\t\\$40"
-	// loong64: "ADDV[U]\t\\$40"
-	// mips: "ADD[U]\t\\$40"
-	// mips64: "ADDV[U]\t\\$40"
-	// ppc64x: `ADD\t[$]40,\sR[0-9]+,\sR`
-	// riscv64: "ADDI\t\\$40",-"NEG"
+	// arm64: "ADD \\$40"
+	// loong64: "ADDV[U] \\$40"
+	// mips: "ADD[U] \\$40"
+	// mips64: "ADDV[U] \\$40"
+	// ppc64x: `ADD [$]40,\sR[0-9]+,\sR`
+	// riscv64: "ADDI \\$40" -"NEG"
 	c := 40 - (-a)
 	return c
 }
 
 func SubSubFromConst(a int) int {
-	// arm64: "ADD\t\\$20"
-	// loong64: "ADDV[U]\t\\$20"
-	// mips: "ADD[U]\t\\$20"
-	// mips64: "ADDV[U]\t\\$20"
-	// ppc64x: `ADD\t[$]20,\sR[0-9]+,\sR`
-	// riscv64: "ADDI\t\\$20",-"NEG"
+	// arm64: "ADD \\$20"
+	// loong64: "ADDV[U] \\$20"
+	// mips: "ADD[U] \\$20"
+	// mips64: "ADDV[U] \\$20"
+	// ppc64x: `ADD [$]20,\sR[0-9]+,\sR`
+	// riscv64: "ADDI \\$20" -"NEG"
 	c := 40 - (20 - a)
 	return c
 }
 
 func AddSubFromConst(a int) int {
-	// ppc64x: `SUBC\tR[0-9]+,\s[$]60,\sR`
-	// riscv64: "ADDI\t\\$-60","NEG"
+	// ppc64x: `SUBC R[0-9]+,\s[$]60,\sR`
+	// riscv64: "ADDI \\$-60" "NEG"
 	c := 40 + (20 - a)
 	return c
 }
 
 func NegSubFromConst(a int) int {
-	// arm64: "SUB\t\\$20"
-	// loong64: "ADDV[U]\t\\$-20"
-	// mips: "ADD[U]\t\\$-20"
-	// mips64: "ADDV[U]\t\\$-20"
-	// ppc64x: `ADD\t[$]-20,\sR[0-9]+,\sR`
-	// riscv64: "ADDI\t\\$-20"
+	// arm64: "SUB \\$20"
+	// loong64: "ADDV[U] \\$-20"
+	// mips: "ADD[U] \\$-20"
+	// mips64: "ADDV[U] \\$-20"
+	// ppc64x: `ADD [$]-20,\sR[0-9]+,\sR`
+	// riscv64: "ADDI \\$-20"
 	c := -(20 - a)
 	return c
 }
 
 func NegAddFromConstNeg(a int) int {
-	// arm64: "SUB\t\\$40","NEG"
-	// loong64: "ADDV[U]\t\\$-40","SUBV"
-	// mips: "ADD[U]\t\\$-40","SUB"
-	// mips64: "ADDV[U]\t\\$-40","SUBV"
-	// ppc64x: `SUBC\tR[0-9]+,\s[$]40,\sR`
-	// riscv64: "ADDI\t\\$-40","NEG"
+	// arm64: "SUB \\$40" "NEG"
+	// loong64: "ADDV[U] \\$-40" "SUBV"
+	// mips: "ADD[U] \\$-40" "SUB"
+	// mips64: "ADDV[U] \\$-40" "SUBV"
+	// ppc64x: `SUBC R[0-9]+,\s[$]40,\sR`
+	// riscv64: "ADDI \\$-40" "NEG"
 	c := -(-40 + a)
 	return c
 }
@@ -153,19 +153,19 @@ func SubSubNegSimplify(a, b int) int {
 	// mips:"SUB"
 	// mips64:"SUBV"
 	// ppc64x:"NEG"
-	// riscv64:"NEG",-"SUB"
+	// riscv64:"NEG" -"SUB"
 	r := (a - b) - a
 	return r
 }
 
 func SubAddSimplify(a, b int) int {
-	// amd64:-"SUBQ",-"ADDQ"
-	// arm64:-"SUB",-"ADD"
-	// loong64:-"SUBV",-"ADDV"
-	// mips:-"SUB",-"ADD"
-	// mips64:-"SUBV",-"ADDV"
-	// ppc64x:-"SUB",-"ADD"
-	// riscv64:-"SUB",-"ADD"
+	// amd64:-"SUBQ" -"ADDQ"
+	// arm64:-"SUB" -"ADD"
+	// loong64:-"SUBV" -"ADDV"
+	// mips:-"SUB" -"ADD"
+	// mips64:-"SUBV" -"ADDV"
+	// ppc64x:-"SUB" -"ADD"
+	// riscv64:-"SUB" -"ADD"
 	r := a + (b - a)
 	return r
 }
@@ -173,9 +173,9 @@ func SubAddSimplify(a, b int) int {
 func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) {
 	// amd64:-"ADDQ"
 	// arm64:-"ADD"
-	// mips:"SUB",-"ADD"
-	// mips64:"SUBV",-"ADDV"
-	// loong64:"SUBV",-"ADDV"
+	// mips:"SUB" -"ADD"
+	// mips64:"SUBV" -"ADDV"
+	// loong64:"SUBV" -"ADDV"
 	r := (a + b) - (a + c)
 	// amd64:-"ADDQ"
 	r1 := (a + b) - (c + a)
@@ -185,9 +185,9 @@ func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) {
 	r3 := (b + a) - (c + a)
 	// amd64:-"SUBQ"
 	// arm64:-"SUB"
-	// mips:"ADD",-"SUB"
-	// mips64:"ADDV",-"SUBV"
-	// loong64:"ADDV",-"SUBV"
+	// mips:"ADD" -"SUB"
+	// mips64:"ADDV" -"SUBV"
+	// loong64:"ADDV" -"SUBV"
 	r4 := (a - c) + (c + b)
 	// amd64:-"SUBQ"
 	r5 := (a - c) + (b + c)
@@ -195,31 +195,31 @@ func SubAddSimplify2(a, b, c int) (int, int, int, int, int, int) {
 }
 
 func SubAddNegSimplify(a, b int) int {
-	// amd64:"NEGQ",-"ADDQ",-"SUBQ"
-	// arm64:"NEG",-"ADD",-"SUB"
-	// loong64:"SUBV",-"ADDV"
-	// mips:"SUB",-"ADD"
-	// mips64:"SUBV",-"ADDV"
-	// ppc64x:"NEG",-"ADD",-"SUB"
-	// riscv64:"NEG",-"ADD",-"SUB"
+	// amd64:"NEGQ" -"ADDQ" -"SUBQ"
+	// arm64:"NEG" -"ADD" -"SUB"
+	// loong64:"SUBV" -"ADDV"
+	// mips:"SUB" -"ADD"
+	// mips64:"SUBV" -"ADDV"
+	// ppc64x:"NEG" -"ADD" -"SUB"
+	// riscv64:"NEG" -"ADD" -"SUB"
 	r := a - (b + a)
 	return r
 }
 
 func AddAddSubSimplify(a, b, c int) int {
 	// amd64:-"SUBQ"
-	// arm64:"ADD",-"SUB"
-	// loong64:"ADDV",-"SUBV"
-	// mips:"ADD",-"SUB"
-	// mips64:"ADDV",-"SUBV"
+	// arm64:"ADD" -"SUB"
+	// loong64:"ADDV" -"SUBV"
+	// mips:"ADD" -"SUB"
+	// mips64:"ADDV" -"SUBV"
 	// ppc64x:-"SUB"
-	// riscv64:"ADD","ADD",-"SUB"
+	// riscv64:"ADD" "ADD" -"SUB"
 	r := a + (b + (c - a))
 	return r
 }
 
 func NegToInt32(a int) int {
-	// riscv64: "NEGW",-"MOVW"
+	// riscv64: "NEGW" -"MOVW"
 	r := int(int32(-a))
 	return r
 }
@@ -229,20 +229,20 @@ func NegToInt32(a int) int {
 // -------------------- //
 
 func Pow2Muls(n1, n2 int) (int, int) {
-	// amd64:"SHLQ\t[$]5",-"IMULQ"
-	// 386:"SHLL\t[$]5",-"IMULL"
-	// arm:"SLL\t[$]5",-"MUL"
-	// arm64:"LSL\t[$]5",-"MUL"
-	// loong64:"SLLV\t[$]5",-"MULV"
-	// ppc64x:"SLD\t[$]5",-"MUL"
+	// amd64:"SHLQ [$]5" -"IMULQ"
+	// 386:"SHLL [$]5" -"IMULL"
+	// arm:"SLL [$]5" -"MUL"
+	// arm64:"LSL [$]5" -"MUL"
+	// loong64:"SLLV [$]5" -"MULV"
+	// ppc64x:"SLD [$]5" -"MUL"
 	a := n1 * 32
 
-	// amd64:"SHLQ\t[$]6",-"IMULQ"
-	// 386:"SHLL\t[$]6",-"IMULL"
-	// arm:"SLL\t[$]6",-"MUL"
+	// amd64:"SHLQ [$]6" -"IMULQ"
+	// 386:"SHLL [$]6" -"IMULL"
+	// arm:"SLL [$]6" -"MUL"
 	// arm64:`NEG\sR[0-9]+<<6,\sR[0-9]+`,-`LSL`,-`MUL`
-	// loong64:"SLLV\t[$]6",-"MULV"
-	// ppc64x:"SLD\t[$]6","NEG\\sR[0-9]+,\\sR[0-9]+",-"MUL"
+	// loong64:"SLLV [$]6" -"MULV"
+	// ppc64x:"SLD [$]6" "NEG\\sR[0-9]+,\\sR[0-9]+" -"MUL"
 	b := -64 * n2
 
 	return a, b
@@ -258,18 +258,18 @@ func Mul_2(n1 int32, n2 int64) (int32, int64) {
 }
 
 func Mul_96(n int) int {
-	// amd64:`SHLQ\t[$]5`,`LEAQ\t\(.*\)\(.*\*2\),`,-`IMULQ`
-	// 386:`SHLL\t[$]5`,`LEAL\t\(.*\)\(.*\*2\),`,-`IMULL`
-	// arm64:`LSL\t[$]5`,`ADD\sR[0-9]+<<1,\sR[0-9]+`,-`MUL`
-	// arm:`SLL\t[$]5`,`ADD\sR[0-9]+<<1,\sR[0-9]+`,-`MUL`
-	// loong64:"SLLV\t[$]5","ALSLV\t[$]1,"
-	// s390x:`SLD\t[$]5`,`SLD\t[$]6`,-`MULLD`
+	// amd64:`SHLQ [$]5`,`LEAQ \(.*\)\(.*\*2\),`,-`IMULQ`
+	// 386:`SHLL [$]5`,`LEAL \(.*\)\(.*\*2\),`,-`IMULL`
+	// arm64:`LSL [$]5`,`ADD\sR[0-9]+<<1,\sR[0-9]+`,-`MUL`
+	// arm:`SLL [$]5`,`ADD\sR[0-9]+<<1,\sR[0-9]+`,-`MUL`
+	// loong64:"SLLV [$]5" "ALSLV [$]1,"
+	// s390x:`SLD [$]5`,`SLD [$]6`,-`MULLD`
 	return n * 96
 }
 
 func Mul_n120(n int) int {
-	// loong64:"SLLV\t[$]3","SLLV\t[$]7","SUBVU",-"MULV"
-	// s390x:`SLD\t[$]3`,`SLD\t[$]7`,-`MULLD`
+	// loong64:"SLLV [$]3" "SLLV [$]7" "SUBVU" -"MULV"
+	// s390x:`SLD [$]3`,`SLD [$]7`,-`MULLD`
 	return n * -120
 }
 
@@ -284,50 +284,50 @@ func MulMemSrc(a []uint32, b []float32) {
 // Multiplications merging tests
 
 func MergeMuls1(n int) int {
-	// amd64:"IMUL3Q\t[$]46"
-	// 386:"IMUL3L\t[$]46"
-	// ppc64x:"MULLD\t[$]46"
+	// amd64:"IMUL3Q [$]46"
+	// 386:"IMUL3L [$]46"
+	// ppc64x:"MULLD [$]46"
 	return 15*n + 31*n // 46n
 }
 
 func MergeMuls2(n int) int {
-	// amd64:"IMUL3Q\t[$]23","(ADDQ\t[$]29)|(LEAQ\t29)"
-	// 386:"IMUL3L\t[$]23","ADDL\t[$]29"
-	// ppc64x/power9:"MADDLD",-"MULLD\t[$]23",-"ADD\t[$]29"
-	// ppc64x/power8:"MULLD\t[$]23","ADD\t[$]29"
+	// amd64:"IMUL3Q [$]23" "(ADDQ [$]29)|(LEAQ 29)"
+	// 386:"IMUL3L [$]23" "ADDL [$]29"
+	// ppc64x/power9:"MADDLD" -"MULLD [$]23" -"ADD [$]29"
+	// ppc64x/power8:"MULLD [$]23" "ADD [$]29"
 	return 5*n + 7*(n+1) + 11*(n+2) // 23n + 29
 }
 
 func MergeMuls3(a, n int) int {
-	// amd64:"ADDQ\t[$]19",-"IMULQ\t[$]19"
-	// 386:"ADDL\t[$]19",-"IMULL\t[$]19"
-	// ppc64x:"ADD\t[$]19",-"MULLD\t[$]19"
+	// amd64:"ADDQ [$]19" -"IMULQ [$]19"
+	// 386:"ADDL [$]19" -"IMULL [$]19"
+	// ppc64x:"ADD [$]19" -"MULLD [$]19"
 	return a*n + 19*n // (a+19)n
 }
 
 func MergeMuls4(n int) int {
-	// amd64:"IMUL3Q\t[$]14"
-	// 386:"IMUL3L\t[$]14"
-	// ppc64x:"MULLD\t[$]14"
+	// amd64:"IMUL3Q [$]14"
+	// 386:"IMUL3L [$]14"
+	// ppc64x:"MULLD [$]14"
 	return 23*n - 9*n // 14n
 }
 
 func MergeMuls5(a, n int) int {
-	// amd64:"ADDQ\t[$]-19",-"IMULQ\t[$]19"
-	// 386:"ADDL\t[$]-19",-"IMULL\t[$]19"
-	// ppc64x:"ADD\t[$]-19",-"MULLD\t[$]19"
+	// amd64:"ADDQ [$]-19" -"IMULQ [$]19"
+	// 386:"ADDL [$]-19" -"IMULL [$]19"
+	// ppc64x:"ADD [$]-19" -"MULLD [$]19"
 	return a*n - 19*n // (a-19)n
 }
 
 // Multiplications folded negation
 
 func FoldNegMul(a int) int {
-	// loong64:"SUBVU","ALSLV\t[$]2","ALSLV\t[$]1"
+	// loong64:"SUBVU" "ALSLV [$]2" "ALSLV [$]1"
 	return (-a) * 11
 }
 
 func Fold2NegMul(a, b int) int {
-	// loong64:"MULV",-"SUBVU\tR[0-9], R0,"
+	// loong64:"MULV" -"SUBVU R[0-9], R0,"
 	return (-a) * (-b)
 }
 
@@ -342,17 +342,17 @@ func DivMemSrc(a []float64) {
 }
 
 func Pow2Divs(n1 uint, n2 int) (uint, int) {
-	// 386:"SHRL\t[$]5",-"DIVL"
-	// amd64:"SHRQ\t[$]5",-"DIVQ"
-	// arm:"SRL\t[$]5",-".*udiv"
-	// arm64:"LSR\t[$]5",-"UDIV"
+	// 386:"SHRL [$]5" -"DIVL"
+	// amd64:"SHRQ [$]5" -"DIVQ"
+	// arm:"SRL [$]5" -".*udiv"
+	// arm64:"LSR [$]5" -"UDIV"
 	// ppc64x:"SRD"
 	a := n1 / 32 // unsigned
 
-	// amd64:"SARQ\t[$]6",-"IDIVQ"
-	// 386:"SARL\t[$]6",-"IDIVL"
-	// arm:"SRA\t[$]6",-".*udiv"
-	// arm64:"ASR\t[$]6",-"SDIV"
+	// amd64:"SARQ [$]6" -"IDIVQ"
+	// 386:"SARL [$]6" -"IDIVL"
+	// arm:"SRA [$]6" -".*udiv"
+	// arm64:"ASR [$]6" -"SDIV"
 	// ppc64x:"SRAD"
 	b := n2 / 64 // signed
 
@@ -361,14 +361,14 @@ func Pow2Divs(n1 uint, n2 int) (uint, int) {
 
 // Check that constant divisions get turned into MULs
 func ConstDivs(n1 uint, n2 int) (uint, int) {
-	// amd64:"MOVQ\t[$]-1085102592571150095","MULQ",-"DIVQ"
-	// 386:"MOVL\t[$]-252645135","MULL",-"DIVL"
+	// amd64:"MOVQ [$]-1085102592571150095" "MULQ" -"DIVQ"
+	// 386:"MOVL [$]-252645135" "MULL" -"DIVL"
 	// arm64:`MOVD`,`UMULH`,-`DIV`
 	// arm:`MOVW`,`MUL`,-`.*udiv`
 	a := n1 / 17 // unsigned
 
-	// amd64:"MOVQ\t[$]-1085102592571150095","IMULQ",-"IDIVQ"
-	// 386:"MOVL\t[$]-252645135","IMULL",-"IDIVL"
+	// amd64:"MOVQ [$]-1085102592571150095" "IMULQ" -"IDIVQ"
+	// 386:"IMULL" -"IDIVL"
 	// arm64:`SMULH`,-`DIV`
 	// arm:`MOVW`,`MUL`,-`.*udiv`
 	b := n2 / 17 // signed
@@ -383,17 +383,17 @@ func FloatDivs(a []float32) float32 {
 }
 
 func Pow2Mods(n1 uint, n2 int) (uint, int) {
-	// 386:"ANDL\t[$]31",-"DIVL"
-	// amd64:"ANDL\t[$]31",-"DIVQ"
-	// arm:"AND\t[$]31",-".*udiv"
-	// arm64:"AND\t[$]31",-"UDIV"
+	// 386:"ANDL [$]31" -"DIVL"
+	// amd64:"ANDL [$]31" -"DIVQ"
+	// arm:"AND [$]31" -".*udiv"
+	// arm64:"AND [$]31" -"UDIV"
 	// ppc64x:"RLDICL"
 	a := n1 % 32 // unsigned
 
-	// 386:"SHRL",-"IDIVL"
-	// amd64:"SHRQ",-"IDIVQ"
-	// arm:"SRA",-".*udiv"
-	// arm64:"ASR",-"REM"
+	// 386:"SHRL" -"IDIVL"
+	// amd64:"SHRQ" -"IDIVQ"
+	// arm:"SRA" -".*udiv"
+	// arm64:"ASR" -"REM"
 	// ppc64x:"SRAD"
 	b := n2 % 64 // signed
 
@@ -402,18 +402,18 @@ func Pow2Mods(n1 uint, n2 int) (uint, int) {
 
 // Check that signed divisibility checks get converted to AND on low bits
 func Pow2DivisibleSigned(n1, n2 int) (bool, bool) {
-	// 386:"TESTL\t[$]63",-"DIVL",-"SHRL"
-	// amd64:"TESTQ\t[$]63",-"DIVQ",-"SHRQ"
-	// arm:"AND\t[$]63",-".*udiv",-"SRA"
-	// arm64:"TST\t[$]63",-"UDIV",-"ASR",-"AND"
-	// ppc64x:"ANDCC",-"RLDICL",-"SRAD",-"CMP"
+	// 386:"TESTL [$]63" -"DIVL" -"SHRL"
+	// amd64:"TESTQ [$]63" -"DIVQ" -"SHRQ"
+	// arm:"AND [$]63" -".*udiv" -"SRA"
+	// arm64:"TST [$]63" -"UDIV" -"ASR" -"AND"
+	// ppc64x:"ANDCC" -"RLDICL" -"SRAD" -"CMP"
 	a := n1%64 == 0 // signed divisible
 
-	// 386:"TESTL\t[$]63",-"DIVL",-"SHRL"
-	// amd64:"TESTQ\t[$]63",-"DIVQ",-"SHRQ"
-	// arm:"AND\t[$]63",-".*udiv",-"SRA"
-	// arm64:"TST\t[$]63",-"UDIV",-"ASR",-"AND"
-	// ppc64x:"ANDCC",-"RLDICL",-"SRAD",-"CMP"
+	// 386:"TESTL [$]63" -"DIVL" -"SHRL"
+	// amd64:"TESTQ [$]63" -"DIVQ" -"SHRQ"
+	// arm:"AND [$]63" -".*udiv" -"SRA"
+	// arm64:"TST [$]63" -"UDIV" -"ASR" -"AND"
+	// ppc64x:"ANDCC" -"RLDICL" -"SRAD" -"CMP"
 	b := n2%64 != 0 // signed indivisible
 
 	return a, b
@@ -421,14 +421,14 @@ func Pow2DivisibleSigned(n1, n2 int) (bool, bool) {
 
 // Check that constant modulo divs get turned into MULs
 func ConstMods(n1 uint, n2 int) (uint, int) {
-	// amd64:"MOVQ\t[$]-1085102592571150095","MULQ",-"DIVQ"
-	// 386:"MOVL\t[$]-252645135","MULL",-"DIVL"
+	// amd64:"MOVQ [$]-1085102592571150095" "MULQ" -"DIVQ"
+	// 386:"MOVL [$]-252645135" "MULL" -"DIVL"
 	// arm64:`MOVD`,`UMULH`,-`DIV`
 	// arm:`MOVW`,`MUL`,-`.*udiv`
 	a := n1 % 17 // unsigned
 
-	// amd64:"MOVQ\t[$]-1085102592571150095","IMULQ",-"IDIVQ"
-	// 386:"MOVL\t[$]-252645135","IMULL",-"IDIVL"
+	// amd64:"MOVQ [$]-1085102592571150095" "IMULQ" -"IDIVQ"
+	// 386: "IMULL" -"IDIVL"
 	// arm64:`SMULH`,-`DIV`
 	// arm:`MOVW`,`MUL`,-`.*udiv`
 	b := n2 % 17 // signed
@@ -438,38 +438,38 @@ func ConstMods(n1 uint, n2 int) (uint, int) {
 
 // Check that divisibility checks x%c==0 are converted to MULs and rotates
 func DivisibleU(n uint) (bool, bool) {
-	// amd64:"MOVQ\t[$]-6148914691236517205","IMULQ","ROLQ\t[$]63",-"DIVQ"
-	// 386:"IMUL3L\t[$]-1431655765","ROLL\t[$]31",-"DIVQ"
-	// arm64:"MOVD\t[$]-6148914691236517205","MOVD\t[$]3074457345618258602","MUL","ROR",-"DIV"
-	// arm:"MUL","CMP\t[$]715827882",-".*udiv"
-	// ppc64x:"MULLD","ROTL\t[$]63"
+	// amd64:"MOVQ [$]-6148914691236517205" "IMULQ" "ROLQ [$]63" -"DIVQ"
+	// 386:"IMUL3L [$]-1431655765" "ROLL [$]31" -"DIVQ"
+	// arm64:"MOVD [$]-6148914691236517205" "MOVD [$]3074457345618258602" "MUL" "ROR" -"DIV"
+	// arm:"MUL" "CMP [$]715827882" -".*udiv"
+	// ppc64x:"MULLD" "ROTL [$]63"
 	even := n%6 == 0
 
-	// amd64:"MOVQ\t[$]-8737931403336103397","IMULQ",-"ROLQ",-"DIVQ"
-	// 386:"IMUL3L\t[$]678152731",-"ROLL",-"DIVQ"
-	// arm64:"MOVD\t[$]-8737931403336103397","MUL",-"ROR",-"DIV"
-	// arm:"MUL","CMP\t[$]226050910",-".*udiv"
-	// ppc64x:"MULLD",-"ROTL"
+	// amd64:"MOVQ [$]-8737931403336103397" "IMULQ" -"ROLQ" -"DIVQ"
+	// 386:"IMUL3L [$]678152731" -"ROLL" -"DIVQ"
+	// arm64:"MOVD [$]-8737931403336103397" "MUL" -"ROR" -"DIV"
+	// arm:"MUL" "CMP [$]226050910" -".*udiv"
+	// ppc64x:"MULLD" -"ROTL"
 	odd := n%19 == 0
 
 	return even, odd
 }
 
 func Divisible(n int) (bool, bool) {
-	// amd64:"IMULQ","ADD","ROLQ\t[$]63",-"DIVQ"
-	// 386:"IMUL3L\t[$]-1431655765","ADDL\t[$]715827882","ROLL\t[$]31",-"DIVQ"
-	// arm64:"MOVD\t[$]-6148914691236517205","MOVD\t[$]3074457345618258602","MUL","ADD\tR","ROR",-"DIV"
-	// arm:"MUL","ADD\t[$]715827882",-".*udiv"
-	// ppc64x/power8:"MULLD","ADD","ROTL\t[$]63"
-	// ppc64x/power9:"MADDLD","ROTL\t[$]63"
+	// amd64:"IMULQ" "ADD" "ROLQ [$]63" -"DIVQ"
+	// 386:"IMUL3L [$]-1431655765" "ADDL [$]715827882" "ROLL [$]31" -"DIVQ"
+	// arm64:"MOVD [$]-6148914691236517205" "MOVD [$]3074457345618258602" "MUL" "ADD R" "ROR" -"DIV"
+	// arm:"MUL" "ADD [$]715827882" -".*udiv"
+	// ppc64x/power8:"MULLD" "ADD" "ROTL [$]63"
+	// ppc64x/power9:"MADDLD" "ROTL [$]63"
 	even := n%6 == 0
 
-	// amd64:"IMULQ","ADD",-"ROLQ",-"DIVQ"
-	// 386:"IMUL3L\t[$]678152731","ADDL\t[$]113025455",-"ROLL",-"DIVQ"
-	// arm64:"MUL","MOVD\t[$]485440633518672410","ADD",-"ROR",-"DIV"
-	// arm:"MUL","ADD\t[$]113025455",-".*udiv"
-	// ppc64x/power8:"MULLD","ADD",-"ROTL"
-	// ppc64x/power9:"MADDLD",-"ROTL"
+	// amd64:"IMULQ" "ADD" -"ROLQ" -"DIVQ"
+	// 386:"IMUL3L [$]678152731" "ADDL [$]113025455" -"ROLL" -"DIVQ"
+	// arm64:"MUL" "MOVD [$]485440633518672410" "ADD" -"ROR" -"DIV"
+	// arm:"MUL" "ADD [$]113025455" -".*udiv"
+	// ppc64x/power8:"MULLD" "ADD" -"ROTL"
+	// ppc64x/power9:"MADDLD" -"ROTL"
 	odd := n%19 == 0
 
 	return even, odd
@@ -568,64 +568,64 @@ func NoFix16B(divd int16) (int16, int16) {
 // optimized into shifts and ands
 
 func LenDiv1(a []int) int {
-	// 386:"SHRL\t[$]10"
-	// amd64:"SHRQ\t[$]10"
-	// arm64:"LSR\t[$]10",-"SDIV"
-	// arm:"SRL\t[$]10",-".*udiv"
-	// ppc64x:"SRD"\t[$]10"
+	// 386:"SHRL [$]10"
+	// amd64:"SHRQ [$]10"
+	// arm64:"LSR [$]10" -"SDIV"
+	// arm:"SRL [$]10" -".*udiv"
+	// ppc64x:"SRD" [$]10"
 	return len(a) / 1024
 }
 
 func LenDiv2(s string) int {
-	// 386:"SHRL\t[$]11"
-	// amd64:"SHRQ\t[$]11"
-	// arm64:"LSR\t[$]11",-"SDIV"
-	// arm:"SRL\t[$]11",-".*udiv"
-	// ppc64x:"SRD\t[$]11"
+	// 386:"SHRL [$]11"
+	// amd64:"SHRQ [$]11"
+	// arm64:"LSR [$]11" -"SDIV"
+	// arm:"SRL [$]11" -".*udiv"
+	// ppc64x:"SRD [$]11"
 	return len(s) / (4097 >> 1)
 }
 
 func LenMod1(a []int) int {
-	// 386:"ANDL\t[$]1023"
-	// amd64:"ANDL\t[$]1023"
-	// arm64:"AND\t[$]1023",-"SDIV"
-	// arm/6:"AND",-".*udiv"
-	// arm/7:"BFC",-".*udiv",-"AND"
+	// 386:"ANDL [$]1023"
+	// amd64:"ANDL [$]1023"
+	// arm64:"AND [$]1023" -"SDIV"
+	// arm/6:"AND" -".*udiv"
+	// arm/7:"BFC" -".*udiv" -"AND"
 	// ppc64x:"RLDICL"
 	return len(a) % 1024
 }
 
 func LenMod2(s string) int {
-	// 386:"ANDL\t[$]2047"
-	// amd64:"ANDL\t[$]2047"
-	// arm64:"AND\t[$]2047",-"SDIV"
-	// arm/6:"AND",-".*udiv"
-	// arm/7:"BFC",-".*udiv",-"AND"
+	// 386:"ANDL [$]2047"
+	// amd64:"ANDL [$]2047"
+	// arm64:"AND [$]2047" -"SDIV"
+	// arm/6:"AND" -".*udiv"
+	// arm/7:"BFC" -".*udiv" -"AND"
 	// ppc64x:"RLDICL"
 	return len(s) % (4097 >> 1)
 }
 
 func CapDiv(a []int) int {
-	// 386:"SHRL\t[$]12"
-	// amd64:"SHRQ\t[$]12"
-	// arm64:"LSR\t[$]12",-"SDIV"
-	// arm:"SRL\t[$]12",-".*udiv"
-	// ppc64x:"SRD\t[$]12"
+	// 386:"SHRL [$]12"
+	// amd64:"SHRQ [$]12"
+	// arm64:"LSR [$]12" -"SDIV"
+	// arm:"SRL [$]12" -".*udiv"
+	// ppc64x:"SRD [$]12"
 	return cap(a) / ((1 << 11) + 2048)
 }
 
 func CapMod(a []int) int {
-	// 386:"ANDL\t[$]4095"
-	// amd64:"ANDL\t[$]4095"
-	// arm64:"AND\t[$]4095",-"SDIV"
-	// arm/6:"AND",-".*udiv"
-	// arm/7:"BFC",-".*udiv",-"AND"
+	// 386:"ANDL [$]4095"
+	// amd64:"ANDL [$]4095"
+	// arm64:"AND [$]4095" -"SDIV"
+	// arm/6:"AND" -".*udiv"
+	// arm/7:"BFC" -".*udiv" -"AND"
 	// ppc64x:"RLDICL"
 	return cap(a) % ((1 << 11) + 2048)
 }
 
 func AddMul(x int) int {
-	// amd64:"LEAQ\t1"
+	// amd64:"LEAQ 1"
 	return 2*x + 1
 }
 
@@ -687,17 +687,17 @@ func divInt(v int64) int64 {
 // The reassociate rules "x - (z + C) -> (x - z) - C" and
 // "(z + C) -x -> C + (z - x)" can optimize the following cases.
 func constantFold1(i0, j0, i1, j1, i2, j2, i3, j3 int) (int, int, int, int) {
-	// arm64:"SUB","ADD\t[$]2"
-	// ppc64x:"SUB","ADD\t[$]2"
+	// arm64:"SUB" "ADD [$]2"
+	// ppc64x:"SUB" "ADD [$]2"
 	r0 := (i0 + 3) - (j0 + 1)
-	// arm64:"SUB","SUB\t[$]4"
-	// ppc64x:"SUB","ADD\t[$]-4"
+	// arm64:"SUB" "SUB [$]4"
+	// ppc64x:"SUB" "ADD [$]-4"
 	r1 := (i1 - 3) - (j1 + 1)
-	// arm64:"SUB","ADD\t[$]4"
-	// ppc64x:"SUB","ADD\t[$]4"
+	// arm64:"SUB" "ADD [$]4"
+	// ppc64x:"SUB" "ADD [$]4"
 	r2 := (i2 + 3) - (j2 - 1)
-	// arm64:"SUB","SUB\t[$]2"
-	// ppc64x:"SUB","ADD\t[$]-2"
+	// arm64:"SUB" "SUB [$]2"
+	// ppc64x:"SUB" "ADD [$]-2"
 	r3 := (i3 - 3) - (j3 - 1)
 	return r0, r1, r2, r3
 }
@@ -705,18 +705,18 @@ func constantFold1(i0, j0, i1, j1, i2, j2, i3, j3 int) (int, int, int, int) {
 // The reassociate rules "x - (z + C) -> (x - z) - C" and
 // "(C - z) - x -> C - (z + x)" can optimize the following cases.
 func constantFold2(i0, j0, i1, j1 int) (int, int) {
-	// arm64:"ADD","MOVD\t[$]2","SUB"
-	// ppc64x: `SUBC\tR[0-9]+,\s[$]2,\sR`
+	// arm64:"ADD" "MOVD [$]2" "SUB"
+	// ppc64x: `SUBC R[0-9]+,\s[$]2,\sR`
 	r0 := (3 - i0) - (j0 + 1)
-	// arm64:"ADD","MOVD\t[$]4","SUB"
-	// ppc64x: `SUBC\tR[0-9]+,\s[$]4,\sR`
+	// arm64:"ADD" "MOVD [$]4" "SUB"
+	// ppc64x: `SUBC R[0-9]+,\s[$]4,\sR`
 	r1 := (3 - i1) - (j1 - 1)
 	return r0, r1
 }
 
 func constantFold3(i, j int) int {
-	// arm64: "LSL\t[$]5,","SUB\tR[0-9]+<<1,",-"ADD"
-	// ppc64x:"MULLD\t[$]30","MULLD"
+	// arm64: "LSL [$]5," "SUB R[0-9]+<<1," -"ADD"
+	// ppc64x:"MULLD [$]30" "MULLD"
 	r := (5 * i) * (6 * j)
 	return r
 }
@@ -726,32 +726,32 @@ func constantFold3(i, j int) int {
 // ----------------- //
 
 func Int64Min(a, b int64) int64 {
-	// amd64: "CMPQ","CMOVQLT"
-	// arm64: "CMP","CSEL"
-	// riscv64/rva20u64:"BLT\t"
-	// riscv64/rva22u64,riscv64/rva23u64:"MIN\t"
+	// amd64: "CMPQ" "CMOVQLT"
+	// arm64: "CMP" "CSEL"
+	// riscv64/rva20u64:"BLT "
+	// riscv64/rva22u64,riscv64/rva23u64:"MIN "
 	return min(a, b)
 }
 
 func Int64Max(a, b int64) int64 {
-	// amd64: "CMPQ","CMOVQGT"
-	// arm64: "CMP","CSEL"
-	// riscv64/rva20u64:"BLT\t"
-	// riscv64/rva22u64,riscv64/rva23u64:"MAX\t"
+	// amd64: "CMPQ" "CMOVQGT"
+	// arm64: "CMP" "CSEL"
+	// riscv64/rva20u64:"BLT "
+	// riscv64/rva22u64,riscv64/rva23u64:"MAX "
 	return max(a, b)
 }
 
 func Uint64Min(a, b uint64) uint64 {
-	// amd64: "CMPQ","CMOVQCS"
-	// arm64: "CMP","CSEL"
+	// amd64: "CMPQ" "CMOVQCS"
+	// arm64: "CMP" "CSEL"
 	// riscv64/rva20u64:"BLTU"
 	// riscv64/rva22u64,riscv64/rva23u64:"MINU"
 	return min(a, b)
 }
 
 func Uint64Max(a, b uint64) uint64 {
-	// amd64: "CMPQ","CMOVQHI"
-	// arm64: "CMP","CSEL"
+	// amd64: "CMPQ" "CMOVQHI"
+	// arm64: "CMP" "CSEL"
 	// riscv64/rva20u64:"BLTU"
 	// riscv64/rva22u64,riscv64/rva23u64:"MAXU"
 	return max(a, b)