4b6b2b1a42
Reverted in 98fa95492f.
The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
This patch plumbs the AssignmentTrackingPass (AKA declare-to-assign), added in
the previous patch in this set, into the optimisation pipeline from
clang. clang/test/CodeGen/assignment-tracking/assignment-tracking.cpp is the
main test for this patch.
Note: while clang (with the help of the declare-to-assign pass) can now emit
Assignment Tracking metadata, the llvm middle and back ends don't yet
understand it.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D132226
19 lines
759 B
C++
19 lines
759 B
C++
// RUN: %clang_cc1 -triple x86_64-none-linux-gnu -debug-info-kind=standalone -O0 \
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// RUN: -emit-llvm -fexperimental-assignment-tracking %s -o - \
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// RUN: | FileCheck %s --check-prefixes=FLAG
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// RUN: %clang_cc1 -triple x86_64-none-linux-gnu -debug-info-kind=standalone -O0 \
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// RUN: -emit-llvm %s -o - \
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// RUN: | FileCheck %s --check-prefixes=NO-FLAG
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// Check some assignment-tracking stuff appears in the output when the flag
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// -fexperimental-assignment-tracking is used, and that it doesn't when
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// the flag is not used (default behaviour: no assignment tracking).
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// FLAG: DIAssignID
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// FLAG: dbg.assign
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// NO-FLAG-NOT: DIAssignID
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// NO-FLAG-NOT: dbg.assign
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void fun(int a) {}
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