cmd/compile: fix assembly test

Bad merge, missed changing to keyed literal structs.

Bug introduced in CL 56252

Change-Id: I55cccff4990bd25e6387f6c90919ee5866900d7f
Reviewed-on: https://go-review.googlesource.com/61290
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/compile/internal/gc/asm_test.go

@@ -832,18 +832,18 @@ var linuxAMD64Tests = []*asmTest{
 		pos: []string{"\tADDQ\t[$]19", "\tIMULQ"}, // (a+19)*n
 	},
 	{
-		`
+		fn: `
 		func mul4(n int) int {
 			return 23*n - 9*n
 		}`,
-		[]string{"\tIMULQ\t[$]14"}, // 14*n
+		pos: []string{"\tIMULQ\t[$]14"}, // 14*n
 	},
 	{
-		`
+		fn: `
 		func mul5(a, n int) int {
 			return a*n - 19*n
 		}`,
-		[]string{"\tADDQ\t[$]-19", "\tIMULQ"}, // (a-19)*n
+		pos: []string{"\tADDQ\t[$]-19", "\tIMULQ"}, // (a-19)*n
 	},
 
 	// see issue 19595.
@@ -1165,18 +1165,18 @@ var linux386Tests = []*asmTest{
 		pos: []string{"TEXT\t.*, [$]0-4"},
 	},
 	{
-		`
+		fn: `
 		func mul3(n int) int {
 			return 23*n - 9*n
 		}`,
-		[]string{"\tIMULL\t[$]14"}, // 14*n
+		pos: []string{"\tIMULL\t[$]14"}, // 14*n
 	},
 	{
-		`
+		fn: `
 		func mul4(a, n int) int {
 			return n*a - a*19
 		}`,
-		[]string{"\tADDL\t[$]-19", "\tIMULL"}, // (n-19)*a
+		pos: []string{"\tADDL\t[$]-19", "\tIMULL"}, // (n-19)*a
 	},
 }