https://github.com/lalaniket8 updated
https://github.com/llvm/llvm-project/pull/125646
>From ae1f0e723ee8de2bc4f0032c884512ec79fae800 Mon Sep 17 00:00:00 2001
From: anikelal <anike...@amd.com>
Date: Tue, 4 Feb 2025 12:13:20 +0530
Subject: [PATCH 1/2] [Driver][HIP] Do not pass -dependency-file flag for HIP
Device offloading
When we launch hipcc with multiple offload architectures along with -MF
dep_file flag, the clang compilation invocations for host and device offloads
write to the same dep_file, and can lead to collision during file IO
operations. This can typically happen during large workloads.
This commit provides a fix to generate dep_file only in host compilation.
---
clang/lib/Driver/ToolChains/Clang.cpp | 30 ++++++++++++++-------------
1 file changed, 16 insertions(+), 14 deletions(-)
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp
b/clang/lib/Driver/ToolChains/Clang.cpp
index 27de34634660c3..4066a588b5f48b 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -1013,21 +1013,23 @@ void Clang::AddPreprocessingOptions(Compilation &C,
const JobAction &JA,
ArgM = ArgMD;
if (ArgM) {
- // Determine the output location.
- const char *DepFile;
- if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
- DepFile = MF->getValue();
- C.addFailureResultFile(DepFile, &JA);
- } else if (Output.getType() == types::TY_Dependencies) {
- DepFile = Output.getFilename();
- } else if (!ArgMD) {
- DepFile = "-";
- } else {
- DepFile = getDependencyFileName(Args, Inputs);
- C.addFailureResultFile(DepFile, &JA);
+ if (!JA.isDeviceOffloading(Action::OFK_HIP)) {
+ // Determine the output location.
+ const char *DepFile;
+ if (Arg *MF = Args.getLastArg(options::OPT_MF)) {
+ DepFile = MF->getValue();
+ C.addFailureResultFile(DepFile, &JA);
+ } else if (Output.getType() == types::TY_Dependencies) {
+ DepFile = Output.getFilename();
+ } else if (!ArgMD) {
+ DepFile = "-";
+ } else {
+ DepFile = getDependencyFileName(Args, Inputs);
+ C.addFailureResultFile(DepFile, &JA);
+ }
+ CmdArgs.push_back("-dependency-file");
+ CmdArgs.push_back(DepFile);
}
- CmdArgs.push_back("-dependency-file");
- CmdArgs.push_back(DepFile);
bool HasTarget = false;
for (const Arg *A : Args.filtered(options::OPT_MT, options::OPT_MQ)) {
>From 62d313ab07199a90b0523e4be1bd4b0b555faf03 Mon Sep 17 00:00:00 2001
From: anikelal <anike...@amd.com>
Date: Wed, 5 Feb 2025 14:49:50 +0530
Subject: [PATCH 2/2] Adding littest
---
.../Driver/dep-file-flag-with-multiple-offload-archs.hip | 6 ++++++
1 file changed, 6 insertions(+)
create mode 100644
clang/test/Driver/dep-file-flag-with-multiple-offload-archs.hip
diff --git a/clang/test/Driver/dep-file-flag-with-multiple-offload-archs.hip
b/clang/test/Driver/dep-file-flag-with-multiple-offload-archs.hip
new file mode 100644
index 00000000000000..a183647a733192
--- /dev/null
+++ b/clang/test/Driver/dep-file-flag-with-multiple-offload-archs.hip
@@ -0,0 +1,6 @@
+// RUN: %clang -### --offload-arch=gfx1030 --offload-arch=gfx1100
--offload-arch=gfx1101 -MD -MF tmp.d -v %s 2>&1 | FileCheck %s
+
+// CHECK-NOT: {{.*}}clang{{.*}}"-target-cpu" "gfx1030"{{.*}}"-dependency-file"
"tmp.d"
+// CHECK-NOT: {{.*}}clang{{.*}}"-target-cpu" "gfx1100"{{.*}}"-dependency-file"
"tmp.d"
+// CHECK-NOT: {{.*}}clang{{.*}}"-target-cpu" "gfx1101"{{.*}}"-dependency-file"
"tmp.d"
+// CHECK: {{.*}}clang{{.*}}"-target-cpu" "x86-64"{{.*}}"-dependency-file"
"tmp.d"
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