mgorny wrote:
I'm afraid I'm seeing a test regression with this change (confirmed via
bisect), on Gentoo amd64:
```
FAIL: Clang :: DebugInfo/CXX/structured-binding.cpp (11221 of 22437)
******************** TEST 'Clang :: DebugInfo/CXX/structured-binding.cpp'
FAILED ********************
Exit Code: 1
Command Output (stderr):
--
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/x/y/clang-abi_x86_32.x86/bin/clang
-cc1 -internal-isystem
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/x/y/clang-abi_x86_32.x86/bin/../../../../lib/clang/22/include
-nostdsysteminc -std=c++23 -emit-llvm -debug-info-kind=standalone -triple
i686-pc-linux-gnu
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/clang/test/DebugInfo/CXX/structured-binding.cpp
-o - | /usr/lib/llvm/22/bin/FileCheck
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/clang/test/DebugInfo/CXX/structured-binding.cpp
--implicit-check-not="call void @llvm.dbg.declare" # RUN: at line 1
+
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/x/y/clang-abi_x86_32.x86/bin/clang
-cc1 -internal-isystem
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/x/y/clang-abi_x86_32.x86/bin/../../../../lib/clang/22/include
-nostdsysteminc -std=c++23 -emit-llvm -debug-info-kind=standalone -triple
i686-pc-linux-gnu
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/clang/test/DebugInfo/CXX/structured-binding.cpp
-o -
+ /usr/lib/llvm/22/bin/FileCheck
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/clang/test/DebugInfo/CXX/structured-binding.cpp
'--implicit-check-not=call void @llvm.dbg.declare'
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/clang/test/DebugInfo/CXX/structured-binding.cpp:12:11:
error: CHECK: expected string not found in input
// CHECK: #dbg_declare(ptr %v, ![[VAR_8:[0-9]+]], !DIExpression()
^
<stdin>:152:44: note: scanning from here
#dbg_declare(ptr %k, !133, !DIExpression(), !139)
^
<stdin>:163:2: note: possible intended match here
#dbg_declare(ptr %v6, !140, !DIExpression(), !145)
^
Input file: <stdin>
Check file:
/var/tmp/portage/llvm-core/clang-22.0.0.9999/work/clang/test/DebugInfo/CXX/structured-binding.cpp
-dump-input=help explains the following input dump.
Input was:
<<<<<<
.
.
.
147: store <2 x i32> <i32 1, i32 2>, ptr %vctr, align 8, !dbg !126
148: #dbg_declare(ptr %5, !127, !DIExpression(DW_OP_deref), !128)
149: #dbg_declare(ptr %5, !129, !DIExpression(DW_OP_deref,
DW_OP_plus_uconst, 4), !130)
150: store ptr %vctr, ptr %5, align 4, !dbg !131
151: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %6, ptr align 4
@__const._Z1fv..1, i32 12, i1 false), !dbg !132
152: #dbg_declare(ptr %k, !133, !DIExpression(), !139)
check:12'0 X~~~~~~~ error: no
match found
153: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %agg.tmp, ptr
align 4 %6, i32 12, i1 false), !dbg !139
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
154: %k4 = getelementptr inbounds nuw %"struct.std::triple", ptr
%agg.tmp, i32 0, i32 0, !dbg !139
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
155: %9 = load i32, ptr %k4, align 4, !dbg !139
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
156: %v = getelementptr inbounds nuw %"struct.std::triple", ptr
%agg.tmp, i32 0, i32 1, !dbg !139
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
157: %10 = load i32, ptr %v, align 4, !dbg !139
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
158: %w = getelementptr inbounds nuw %"struct.std::triple", ptr
%agg.tmp, i32 0, i32 2, !dbg !139
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
159: %11 = load i32, ptr %w, align 4, !dbg !139
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
160: %call5 = call noundef i32 @_ZSt3getILj0EEiSt6triple(i32 %9, i32
%10, i32 %11), !dbg !139
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
161: store i32 %call5, ptr %ref.tmp3, align 4, !dbg !139
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
162: store ptr %ref.tmp3, ptr %k, align 4, !dbg !139
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
163: #dbg_declare(ptr %v6, !140, !DIExpression(), !145)
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
check:12'1 ? possible
intended match
164: call void @llvm.memcpy.p0.p0.i32(ptr align 4 %agg.tmp8, ptr
align 4 %6, i32 12, i1 false), !dbg !145
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
165: %k9 = getelementptr inbounds nuw %"struct.std::triple", ptr
%agg.tmp8, i32 0, i32 0, !dbg !145
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
166: %12 = load i32, ptr %k9, align 4, !dbg !145
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
167: %v10 = getelementptr inbounds nuw %"struct.std::triple", ptr
%agg.tmp8, i32 0, i32 1, !dbg !145
check:12'0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
168: %13 = load i32, ptr %v10, align 4, !dbg !145
check:12'0 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.
.
.
>>>>>>
--
********************
```
https://github.com/llvm/llvm-project/pull/122265
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