094572701d
This patch makes the final major change of the RemoveDIs project, changing the default IR output from debug intrinsics to debug records. This is expected to break a large number of tests: every single one that tests for uses or declarations of debug intrinsics and does not explicitly disable writing records. If this patch has broken your downstream tests (or upstream tests on a configuration I wasn't able to run): 1. If you need to immediately unblock a build, pass `--write-experimental-debuginfo=false` to LLVM's option processing for all failing tests (remember to use `-mllvm` for clang/flang to forward arguments to LLVM). 2. For most test failures, the changes are trivial and mechanical, enough that they can be done by script; see the migration guide for a guide on how to do this: https://llvm.org/docs/RemoveDIsDebugInfo.html#test-updates 3. If any tests fail for reasons other than FileCheck check lines that need updating, such as assertion failures, that is most likely a real bug with this patch and should be reported as such. For more information, see the recent PSA: https://discourse.llvm.org/t/psa-ir-output-changing-from-debug-intrinsics-to-debug-records/79578
74 lines
2.5 KiB
LLVM
74 lines
2.5 KiB
LLVM
; RUN: opt -passes='module(debugify),function(dce)' -S < %s | FileCheck %s
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; RUN: opt -passes='module(debugify),function(dce)' -S < %s --try-experimental-debuginfo-iterators | FileCheck %s
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; CHECK-LABEL: @test
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define void @test() {
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%add = add i32 1, 2
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; CHECK-NEXT: #dbg_value(i32 1, [[add:![0-9]+]], !DIExpression(DW_OP_plus_uconst, 2, DW_OP_stack_value),
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%sub = sub i32 %add, 1
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; CHECK-NEXT: #dbg_value(i32 1, [[sub:![0-9]+]], !DIExpression(DW_OP_plus_uconst, 2, DW_OP_constu, 1, DW_OP_minus, DW_OP_stack_value),
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; CHECK-NEXT: ret void
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ret void
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}
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declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind
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declare void @llvm.lifetime.end.p0(i64, ptr nocapture) nounwind
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; CHECK-LABEL: @test_lifetime_alloca
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define i32 @test_lifetime_alloca() {
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; Check that lifetime intrinsics are removed along with the pointer.
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; CHECK-NEXT: #dbg_value
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; CHECK-NEXT: ret i32 0
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; CHECK-NOT: llvm.lifetime.start
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; CHECK-NOT: llvm.lifetime.end
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%i = alloca i8, align 4
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call void @llvm.lifetime.start.p0(i64 -1, ptr %i)
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call void @llvm.lifetime.end.p0(i64 -1, ptr %i)
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ret i32 0
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}
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; CHECK-LABEL: @test_lifetime_arg
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define i32 @test_lifetime_arg(ptr) {
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; Check that lifetime intrinsics are removed along with the pointer.
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; CHECK-NEXT: #dbg_value
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; CHECK-NEXT: ret i32 0
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; CHECK-NOT: llvm.lifetime.start
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; CHECK-NOT: llvm.lifetime.end
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call void @llvm.lifetime.start.p0(i64 -1, ptr %0)
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call void @llvm.lifetime.end.p0(i64 -1, ptr %0)
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ret i32 0
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}
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@glob = global i8 1
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; CHECK-LABEL: @test_lifetime_global
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define i32 @test_lifetime_global() {
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; Check that lifetime intrinsics are removed along with the pointer.
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; CHECK-NEXT: #dbg_value
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; CHECK-NEXT: ret i32 0
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; CHECK-NOT: llvm.lifetime.start
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; CHECK-NOT: llvm.lifetime.end
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call void @llvm.lifetime.start.p0(i64 -1, ptr @glob)
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call void @llvm.lifetime.end.p0(i64 -1, ptr @glob)
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ret i32 0
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}
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; CHECK-LABEL: @test_lifetime_bitcast
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define i32 @test_lifetime_bitcast(ptr %arg) {
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; Check that lifetime intrinsics are NOT removed when the pointer is a bitcast.
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; It's not uncommon for two bitcasts to be made: one for lifetime, one for use.
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; TODO: Support the above case.
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; CHECK-NEXT: bitcast
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; CHECK-NEXT: #dbg_value
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; CHECK-NEXT: llvm.lifetime.start.p0(i64 -1, ptr %cast)
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; CHECK-NEXT: llvm.lifetime.end.p0(i64 -1, ptr %cast)
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; CHECK-NEXT: ret i32 0
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%cast = bitcast ptr %arg to ptr
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call void @llvm.lifetime.start.p0(i64 -1, ptr %cast)
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call void @llvm.lifetime.end.p0(i64 -1, ptr %cast)
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ret i32 0
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}
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; CHECK: [[add]] = !DILocalVariable
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; CHECK: [[sub]] = !DILocalVariable
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