================
@@ -0,0 +1,127 @@
+// Checks that -fmodules-driver correctly handles compilations using Clang
modules.
+
+// RUN: split-file %s %t
+// RUN: rm -rf %t/modules-cache
+
+// RUN: %clang -std=c++23 \
+// RUN: -fmodules-driver -Rmodules-driver \
+// RUN: -fmodules -Rmodule-import \
+// RUN: -fmodule-map-file=%t/module.modulemap \
+// RUN: -fmodules-cache-path=%t/modules-cache \
+// RUN: -fsyntax-only %t/main.cpp 2>&1 \
+// RUN: | sed 's:\\\\\?:/:g' \
+// RUN: | FileCheck -DPREFIX=%/t --check-prefix=CHECK-REMARKS %s
+
+// RUN: rm -rf %t/modules-cache
+// RUN: %clang -std=c++23 \
+// RUN: -fmodules-driver \
+// RUN: -fmodules \
+// RUN: -fmodule-map-file=%t/module.modulemap \
+// RUN: -fmodules-cache-path=%t/modules-cache \
+// RUN: -fsyntax-only %t/main.cpp \
+// RUN: -### 2>&1 \
+// RUN: | sed 's:\\\\\?:/:g' \
+// RUN: | FileCheck --check-prefix=CHECK-CC1 %s
+
+// The scan itself will also produce [-Rmodule-import] remarks.
+// Let's skip past them, we only care about the final -cc1 commands.
+// CHECK-REMARKS: clang: remark: printing module dependency graph
[-Rmodules-driver]
+// CHECK-REMARKS-NEXT: digraph "Module Dependency Graph" {
+// CHECK-REMARKS: }
+
+// CHECK-REMARKS: [[PREFIX]]/main.cpp:1:2: remark: importing module 'root' from
+// CHECK-REMARKS: [[PREFIX]]/main.cpp:1:2: remark: importing module 'direct1'
into 'root'
+// CHECK-REMARKS: [[PREFIX]]/main.cpp:1:2: remark: importing module
'transitive1' into 'direct1'
+// CHECK-REMARKS: [[PREFIX]]/main.cpp:1:2: remark: importing module
'transitive2' into 'direct1'
+// CHECK-REMARKS: [[PREFIX]]/main.cpp:1:2: remark: importing module 'direct2'
into 'root'
+// CHECK-REMARKS: [[PREFIX]]/main.cpp:1:2: remark: importing module
'transitive2' into 'direct2'
+
+// CHECK-CC1: "-cc1"
+// CHECK-CC1-SAME: "-o" "[[TRANSITIVE2PCM:[^"]+]]"
+// CHECK-CC1-SAME: "-emit-module"
+// CHECK-CC1-SAME: "-fmodule-name=transitive2"
+// CHECK-CC1-SAME: "-fno-implicit-modules"
+
+// CHECK-CC1: "-cc1"
+// CHECK-CC1-SAME: "-o" "[[DIRECT2PCM:[^"]+]]"
+// CHECK-CC1-SAME: "-emit-module"
+// CHECK-CC1-SAME: "-fmodule-file=transitive2=[[TRANSITIVE2PCM]]"
+// CHECK-CC1-SAME: "-fmodule-name=direct2"
+// CHECK-CC1-SAME: "-fno-implicit-modules"
+
+// CHECK-CC1: "-cc1"
+// CHECK-CC1-SAME: "-o" "[[TRANSITIVE1PCM:[^"]+]]"
+// CHECK-CC1-SAME: "-emit-module"
+// CHECK-CC1-SAME: "-fmodule-name=transitive1"
+// CHECK-CC1-SAME: "-fno-implicit-modules"
+
+// CHECK-CC1: "-cc1"
+// CHECK-CC1-SAME: "-o" "[[DIRECT1PCM:[^"]+]]"
+// CHECK-CC1-SAME: "-emit-module"
+// CHECK-CC1-SAME: "-fmodule-file=transitive1=[[TRANSITIVE1PCM]]"
+// CHECK-CC1-SAME: "-fmodule-file=transitive2=[[TRANSITIVE2PCM]]"
+// CHECK-CC1-SAME: "-fmodule-name=direct1"
+// CHECK-CC1-SAME: "-fno-implicit-modules"
+
+// CHECK-CC1: "-cc1"
+// CHECK-CC1-SAME: "-o" "[[ROOTPCM:[^"]+]]"
+// CHECK-CC1-SAME: "-emit-module"
+// CHECK-CC1-SAME: "-fmodule-file=direct1=[[DIRECT1PCM]]"
+// CHECK-CC1-SAME: "-fmodule-file=direct2=[[DIRECT2PCM]]"
+// CHECK-CC1-SAME: "-fmodule-name=root"
+// CHECK-CC1-SAME: "-fno-implicit-modules"
+
+// CHECK-CC1: "-cc1"
+// CHECK-CC1-SAME: "-fsyntax-only"
+// CHECK-CC1-SAME: "{{.*}}/main.cpp"
+// CHECK-CC1-SAME: "-fmodule-file=root=[[ROOTPCM]]"
+// CHECK-CC1-SAME: "-fno-implicit-modules"
----------------
qiongsiwu wrote:
> Would it be fine to do this as a follow up patch?
Yes for sure! Thanks!
https://github.com/llvm/llvm-project/pull/187606
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