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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
26 lines
1.0 KiB
C
26 lines
1.0 KiB
C
// RUN: %clang -gkey-instructions -x c++ %s -gmlt -S -emit-llvm -o - \
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// RUN: | FileCheck %s --implicit-check-not atomGroup --implicit-check-not atomRank
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// RUN: %clang -gkey-instructions -x c %s -gmlt -S -emit-llvm -o - \
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// RUN: | FileCheck %s --implicit-check-not atomGroup --implicit-check-not atomRank
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__attribute__((ext_vector_type(1))) char c;
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typedef struct { int a, b, c; } Struct;
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void fun(Struct a) {
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// CHECK: call void @llvm.memcpy{{.*}}, !dbg [[G1R1:!.*]]
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Struct b = a;
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// CHECK: call void @llvm.memcpy{{.*}}, !dbg [[G2R1:!.*]]
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b = a;
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// CHECK: %2 = load <1 x i8>, ptr @c
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// CHECK: %vecins = insertelement <1 x i8> %2, i8 0, i32 0, !dbg [[G3R2:!.*]]
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// CHECK: store <1 x i8> %vecins, ptr @c{{.*}}, !dbg [[G3R1:!.*]]
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c[0] = 0;
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}
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// CHECK: [[G1R1]] = !DILocation({{.*}}, atomGroup: 1, atomRank: 1)
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// CHECK: [[G2R1]] = !DILocation({{.*}}, atomGroup: 2, atomRank: 1)
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// CHECK: [[G3R2]] = !DILocation({{.*}}, atomGroup: 3, atomRank: 2)
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// CHECK: [[G3R1]] = !DILocation({{.*}}, atomGroup: 3, atomRank: 1)
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