internal/rosa/llvm: LIT args helper

This is useful for other projects using LIT.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/llvm.go

@@ -3,11 +3,33 @@ package rosa
 import (
 	"regexp"
 	"runtime"
+	"slices"
 	"strings"
 
 	"hakurei.app/internal/pkg"
 )
 
+// litArgs returns [LIT] arguments for optional verbosity and check skipping.
+func litArgs(verbose bool, skipChecks ...string) string {
+	args := []string{"-sv"}
+	if verbose {
+		args[0] = "--verbose"
+	}
+
+	if len(skipChecks) > 0 {
+		skipChecks = slices.Clone(skipChecks)
+		for i, s := range skipChecks {
+			s = regexp.QuoteMeta(s)
+			s = strings.ReplaceAll(s, "/", "\\/")
+			skipChecks[i] = s
+		}
+		args = append(args,
+			"--filter-out='\\''"+strings.Join(skipChecks, "|")+"'\\''")
+	}
+
+	return "'" + strings.Join(args, " ") + "'"
+}
+
 func (t Toolchain) newLLVM() (pkg.Artifact, string) {
 	cache := []KV{
 		{"ENABLE_LINKER_BUILD_ID", "ON"},
@@ -96,11 +118,6 @@ func (t Toolchain) newLLVM() (pkg.Artifact, string) {
 				"unwind_leaffunction",
 			)
 		}
-		for i, s := range skipChecks {
-			s = regexp.QuoteMeta(s)
-			s = strings.ReplaceAll(s, "/", "\\/")
-			skipChecks[i] = s
-		}
 
 		if presetOpts&OptLLVMNoLTO == 0 {
 			cache = append(cache, []KV{
@@ -113,10 +130,7 @@ func (t Toolchain) newLLVM() (pkg.Artifact, string) {
 			// symbols: clock_gettime, mallopt
 			{"COMPILER_RT_INCLUDE_TESTS", "OFF"},
 
-			{"LLVM_LIT_ARGS", "'" + strings.Join([]string{
-				"--verbose",
-				"--filter-out='\\''" + strings.Join(skipChecks, "|") + "'\\''",
-			}, " ") + "'"},
+			{"LLVM_LIT_ARGS", litArgs(true, skipChecks...)},
 		}...)
 	}