https://github.com/OCHyams created https://github.com/llvm/llvm-project/pull/134633
This patch is part of a stack that teaches Clang to generate Key Instructions metadata for C and C++. The Key Instructions project is introduced, including a "quick summary" section at the top which adds context for this PR, here: https://discourse.llvm.org/t/rfc-improving-is-stmt-placement-for-better-interactive-debugging/82668 The feature is only functional in LLVM if LLVM is built with CMake flag LLVM_EXPERIMENTAL_KEY_INSTRUCTIONs. Eventually that flag will be removed. The Clang-side work is demoed here: https://github.com/llvm/llvm-project/pull/130943 >From 29d5428307acc1493f2bb2819b627688b4917c07 Mon Sep 17 00:00:00 2001 From: Orlando Cazalet-Hyams <orlando.hy...@sony.com> Date: Tue, 1 Apr 2025 14:50:41 +0100 Subject: [PATCH] [KeyInstr][Clang] Scalar init atom This patch is part of a stack that teaches Clang to generate Key Instructions metadata for C and C++. The Key Instructions project is introduced, including a "quick summary" section at the top which adds context for this PR, here: https://discourse.llvm.org/t/rfc-improving-is-stmt-placement-for-better-interactive-debugging/82668 The feature is only functional in LLVM if LLVM is built with CMake flag LLVM_EXPERIMENTAL_KEY_INSTRUCTIONs. Eventually that flag will be removed. The Clang-side work is demoed here: https://github.com/llvm/llvm-project/pull/130943 --- clang/lib/CodeGen/CGDecl.cpp | 1 + clang/lib/CodeGen/CGExpr.cpp | 2 ++ clang/test/KeyInstructions/init-scalar.c | 19 +++++++++++++++++++ 3 files changed, 22 insertions(+) create mode 100644 clang/test/KeyInstructions/init-scalar.c diff --git a/clang/lib/CodeGen/CGDecl.cpp b/clang/lib/CodeGen/CGDecl.cpp index eab1ebfb2369b..96d217b0a13cc 100644 --- a/clang/lib/CodeGen/CGDecl.cpp +++ b/clang/lib/CodeGen/CGDecl.cpp @@ -1921,6 +1921,7 @@ void CodeGenFunction::EmitAutoVarInit(const AutoVarEmission &emission) { const VarDecl &D = *emission.Variable; auto DL = ApplyDebugLocation::CreateDefaultArtificial(*this, D.getLocation()); + ApplyAtomGroup Grp(getDebugInfo()); QualType type = D.getType(); // If this local has an initializer, emit it now. diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp index 5943ff9294e1a..a00a8ba2cd5cb 100644 --- a/clang/lib/CodeGen/CGExpr.cpp +++ b/clang/lib/CodeGen/CGExpr.cpp @@ -2180,6 +2180,8 @@ void CodeGenFunction::EmitStoreOfScalar(llvm::Value *Value, Address Addr, } llvm::StoreInst *Store = Builder.CreateStore(Value, Addr, Volatile); + addInstToCurrentSourceAtom(Store, Value); + if (isNontemporal) { llvm::MDNode *Node = llvm::MDNode::get(Store->getContext(), diff --git a/clang/test/KeyInstructions/init-scalar.c b/clang/test/KeyInstructions/init-scalar.c new file mode 100644 index 0000000000000..c212c2a4fd623 --- /dev/null +++ b/clang/test/KeyInstructions/init-scalar.c @@ -0,0 +1,19 @@ +// RUN: %clang -gkey-instructions -x c++ %s -gmlt -gcolumn-info -S -emit-llvm -o - \ +// RUN: | FileCheck %s --implicit-check-not atomGroup --implicit-check-not atomRank + +// RUN: %clang -gkey-instructions -x c %s -gmlt -gcolumn-info -S -emit-llvm -o - \ +// RUN: | FileCheck %s --implicit-check-not atomGroup --implicit-check-not atomRank + +void a() { +// CHECK: store i32 0, ptr %A{{.*}}, !dbg [[G1R1:!.*]] + int A = 0; +// CHECK: %add = add {{.*}}, !dbg [[G2R2:!.*]] +// CHECK: store i32 %add, ptr %B, align 4, !dbg [[G2R1:!.*]] + int B = 2 * A + 1; +// CHECK-TODO: ret{{.*}}, !dbg [[G3R1:!.*]] +} + +// CHECK: [[G1R1]] = !DILocation({{.*}}, atomGroup: 1, atomRank: 1) +// CHECK: [[G2R2]] = !DILocation({{.*}}, atomGroup: 2, atomRank: 2) +// CHECK: [[G2R1]] = !DILocation({{.*}}, atomGroup: 2, atomRank: 1) +// CHECK-TODO: [[G3R1]] = !DILocation({{.*}}, atomGroup: 3, atomRank: 1) _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
