diff --git a/common/check_internal.h b/common/check_internal.h
index 300b6028cff9..3a97adf95730 100644
--- a/common/check_internal.h
+++ b/common/check_internal.h
@@ -37,8 +37,8 @@ namespace Carbon::Internal {
 // `llvm::formatv` which handles all of the formatting of output.
 template <TemplateString Kind, TemplateString File, int Line,
           TemplateString ConditionStr, TemplateString FormatStr, typename... Ts>
-[[noreturn, gnu::cold, clang::noinline, clang::preserve_most]] auto CheckFail(
-    Ts&&... values) -> void {
+[[noreturn, gnu::cold, clang::noinline]] auto CheckFail(Ts&&... values)
+    -> void {
   if constexpr (llvm::StringRef(FormatStr).empty()) {
     // Skip the format string rendering if empty. Note that we don't skip it
     // even if there are no values as we want to have consistent handling of
diff --git a/common/vlog.h b/common/vlog.h
index 37cba0195559..952181b6612a 100644
--- a/common/vlog.h
+++ b/common/vlog.h
@@ -19,8 +19,8 @@ namespace Carbon::Internal {
 // Internally uses `llvm::formatv` to render the format string with any value
 // arguments, and streams the result to the provided stream.
 template <TemplateString FormatStr, typename... Ts>
-[[clang::noinline, clang::preserve_most]] auto VLogImpl(
-    llvm::raw_ostream* stream, Ts&&... values) -> void {
+[[clang::noinline]] auto VLogImpl(llvm::raw_ostream* stream, Ts&&... values)
+    -> void {
   *stream << llvm::formatv(FormatStr.c_str(), std::forward<Ts>(values)...);
 }