[llvm] r333237 - [Debugify] Set a DI version module flag for llc compatibility

Vedant Kumar via llvm-commits llvm-commits at lists.llvm.org
Thu May 24 16:00:23 PDT 2018


Author: vedantk
Date: Thu May 24 16:00:23 2018
New Revision: 333237

URL: http://llvm.org/viewvc/llvm-project?rev=333237&view=rev
Log:
[Debugify] Set a DI version module flag for llc compatibility

Setting the "Debug Info Version" module flag makes it possible to pipe
synthetic debug info into llc, which is useful for testing backends.

Modified:
    llvm/trunk/test/DebugInfo/debugify.ll
    llvm/trunk/test/Transforms/DeadStoreElimination/debuginfo.ll
    llvm/trunk/test/Transforms/InstCombine/debuginfo-variables.ll
    llvm/trunk/test/Transforms/LCSSA/basictest.ll
    llvm/trunk/tools/opt/Debugify.cpp

Modified: llvm/trunk/test/DebugInfo/debugify.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/debugify.ll?rev=333237&r1=333236&r2=333237&view=diff
==============================================================================
--- llvm/trunk/test/DebugInfo/debugify.ll (original)
+++ llvm/trunk/test/DebugInfo/debugify.ll Thu May 24 16:00:23 2018
@@ -51,6 +51,7 @@ define weak_odr zeroext i1 @baz() {
 
 ; CHECK-DAG: !llvm.dbg.cu = !{![[CU:.*]]}
 ; CHECK-DAG: !llvm.debugify = !{![[NUM_INSTS:.*]], ![[NUM_VARS:.*]]}
+; CHECK-DAG: "Debug Info Version"
 
 ; CHECK-DAG: ![[CU]] = distinct !DICompileUnit(language: DW_LANG_C, file: {{.*}}, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: {{.*}})
 ; CHECK-DAG: !DIFile(filename: "<stdin>", directory: "/")

Modified: llvm/trunk/test/Transforms/DeadStoreElimination/debuginfo.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/DeadStoreElimination/debuginfo.ll?rev=333237&r1=333236&r2=333237&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/DeadStoreElimination/debuginfo.ll (original)
+++ llvm/trunk/test/Transforms/DeadStoreElimination/debuginfo.ll Thu May 24 16:00:23 2018
@@ -14,10 +14,10 @@ define i32* @test_salvage() {
 ; CHECK-NEXT: store i32 0, i32* %P
 
 ; Check that all four original local variables have their values preserved.
-; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* %p, metadata !8, metadata !DIExpression()), !dbg !14
-; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* %P, metadata !10, metadata !DIExpression()), !dbg !15
-; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* %P, metadata !11, metadata !DIExpression(DW_OP_deref)), !dbg !18
-; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* %P, metadata !13, metadata !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !19
+; CHECK-NEXT: @llvm.dbg.value(metadata i8* %p, metadata ![[p:.*]], metadata !DIExpression())
+; CHECK-NEXT: @llvm.dbg.value(metadata i32* %P, metadata ![[P:.*]], metadata !DIExpression())
+; CHECK-NEXT: @llvm.dbg.value(metadata i32* %P, metadata ![[DEAD:.*]], metadata !DIExpression(DW_OP_deref))
+; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* %P, metadata ![[DEAD2:.*]], metadata !DIExpression(DW_OP_deref, DW_OP_plus_uconst, 1, DW_OP_stack_value))
   %p = tail call i8* @malloc(i32 4)
   %P = bitcast i8* %p to i32*
   %DEAD = load i32, i32* %P
@@ -28,13 +28,7 @@ define i32* @test_salvage() {
   ret i32* %P
 }
 
-; CHECK: !8 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 1, type: !9)
-; CHECK: !10 = !DILocalVariable(name: "2", scope: !5, file: !1, line: 2, type: !9)
-; CHECK: !11 = !DILocalVariable(name: "3", scope: !5, file: !1, line: 3, type: !12)
-; CHECK: !13 = !DILocalVariable(name: "4", scope: !5, file: !1, line: 4, type: !12)
-; CHECK-DAG: !14 = !DILocation(line: 1, column: 1, scope: !5)
-; CHECK-DAG: !15 = !DILocation(line: 2, column: 1, scope: !5)
-; CHECK-DAG: !18 = !DILocation(line: 3, column: 1, scope: !5)
-; CHECK-DAG: !19 = !DILocation(line: 4, column: 1, scope: !5)
-; CHECK-DAG: !16 = !DILocation(line: 6, column: 1, scope: !5)
-; CHECK-DAG: !17 = !DILocation(line: 7, column: 1, scope: !5)
+; CHECK: ![[p]] = !DILocalVariable(name: "1"
+; CHECK: ![[P]] = !DILocalVariable(name: "2"
+; CHECK: ![[DEAD]] = !DILocalVariable(name: "3"
+; CHECK: ![[DEAD2]] = !DILocalVariable(name: "4"

Modified: llvm/trunk/test/Transforms/InstCombine/debuginfo-variables.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/debuginfo-variables.ll?rev=333237&r1=333236&r2=333237&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/debuginfo-variables.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/debuginfo-variables.ll Thu May 24 16:00:23 2018
@@ -3,8 +3,8 @@
 define i64 @test_sext_zext(i16 %A) {
 ; CHECK-LABEL: @test_sext_zext(
 ; CHECK-NEXT:  [[C2:%.*]] = zext i16 %A to i64
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 [[C2]], metadata !8, metadata !DIExpression()), !dbg !13
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 [[C2]], metadata !10, metadata !DIExpression()), !dbg !12
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 [[C2]], {{.*}}, metadata !DIExpression())
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 [[C2]], {{.*}}, metadata !DIExpression())
   %c1 = zext i16 %A to i32
   %c2 = sext i32 %c1 to i64
   ret i64 %c2
@@ -12,84 +12,84 @@ define i64 @test_sext_zext(i16 %A) {
 
 define void @test_or(i64 %A) {
 ; CHECK-LABEL: @test_or(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !17, metadata !DIExpression(DW_OP_constu, 256, DW_OP_or, DW_OP_stack_value)), !dbg !18
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 256, DW_OP_or, DW_OP_stack_value))
   %1 = or i64 %A, 256
   ret void
 }
 
 define void @test_xor(i32 %A) {
 ; CHECK-LABEL: @test_xor(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i32 %A, metadata !22, metadata !DIExpression(DW_OP_constu, 1, DW_OP_xor, DW_OP_stack_value)), !dbg !23
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i32 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 1, DW_OP_xor, DW_OP_stack_value))
   %1 = xor i32 %A, 1
   ret void
 }
 
 define void @test_sub_neg(i64 %A) {
 ; CHECK-LABEL: @test_sub_neg(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !27, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value)), !dbg !28
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value))
   %1 = sub i64 %A, -1
   ret void
 }
 
 define void @test_sub_pos(i64 %A) {
 ; CHECK-LABEL: @test_sub_pos(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !32, metadata !DIExpression(DW_OP_constu, 1, DW_OP_minus, DW_OP_stack_value)), !dbg !33
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 1, DW_OP_minus, DW_OP_stack_value))
   %1 = sub i64 %A, 1
   ret void
 }
 
 define void @test_shl(i64 %A) {
 ; CHECK-LABEL: @test_shl(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !37, metadata !DIExpression(DW_OP_constu, 7, DW_OP_shl, DW_OP_stack_value)), !dbg !38
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 7, DW_OP_shl, DW_OP_stack_value))
   %1 = shl i64 %A, 7
   ret void
 }
 
 define void @test_lshr(i64 %A) {
 ; CHECK-LABEL: @test_lshr(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !42, metadata !DIExpression(DW_OP_constu, 7, DW_OP_shr, DW_OP_stack_value)), !dbg !43
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 7, DW_OP_shr, DW_OP_stack_value))
   %1 = lshr i64 %A, 7
   ret void
 }
 
 define void @test_ashr(i64 %A) {
 ; CHECK-LABEL: @test_ashr(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !47, metadata !DIExpression(DW_OP_constu, 7, DW_OP_shra, DW_OP_stack_value)), !dbg !48
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 7, DW_OP_shra, DW_OP_stack_value))
   %1 = ashr i64 %A, 7
   ret void
 }
 
 define void @test_mul(i64 %A) {
 ; CHECK-LABEL: @test_mul(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !52, metadata !DIExpression(DW_OP_constu, 7, DW_OP_mul, DW_OP_stack_value)), !dbg !53
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 7, DW_OP_mul, DW_OP_stack_value))
   %1 = mul i64 %A, 7
   ret void
 }
 
 define void @test_sdiv(i64 %A) {
 ; CHECK-LABEL: @test_sdiv(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !57, metadata !DIExpression(DW_OP_constu, 7, DW_OP_div, DW_OP_stack_value)), !dbg !58
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 7, DW_OP_div, DW_OP_stack_value))
   %1 = sdiv i64 %A, 7
   ret void
 }
 
 define void @test_srem(i64 %A) {
 ; CHECK-LABEL: @test_srem(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !62, metadata !DIExpression(DW_OP_constu, 7, DW_OP_mod, DW_OP_stack_value)), !dbg !63
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 7, DW_OP_mod, DW_OP_stack_value))
   %1 = srem i64 %A, 7
   ret void
 }
 
 define void @test_ptrtoint(i64* %P) {
 ; CHECK-LABEL: @test_ptrtoint
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64* %P, metadata !67, metadata !DIExpression()), !dbg !68
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64* %P, {{.*}}, metadata !DIExpression())
   %1 = ptrtoint i64* %P to i64
   ret void
 }
 
 define void @test_and(i64 %A) {
 ; CHECK-LABEL: @test_and(
-; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, metadata !72, metadata !DIExpression(DW_OP_constu, 256, DW_OP_and, DW_OP_stack_value)), !dbg !73
+; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 256, DW_OP_and, DW_OP_stack_value))
   %1 = and i64 %A, 256
   ret void
 }

Modified: llvm/trunk/test/Transforms/LCSSA/basictest.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LCSSA/basictest.ll?rev=333237&r1=333236&r2=333237&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/LCSSA/basictest.ll (original)
+++ llvm/trunk/test/Transforms/LCSSA/basictest.ll Thu May 24 16:00:23 2018
@@ -19,7 +19,7 @@ post.if:		; preds = %if.false, %if.true
 	br i1 %S2, label %loop.exit, label %loop.interior
 loop.exit:		; preds = %post.if
 ; CHECK: %X3.lcssa = phi i32
-; CHECK2: call void @llvm.dbg.value(metadata i32 %X3.lcssa, metadata !11, metadata !DIExpression()), !dbg !19
+; CHECK2: call void @llvm.dbg.value(metadata i32 %X3.lcssa
 ; CHECK: %X4 = add i32 3, %X3.lcssa
 	%X4 = add i32 3, %X3		; <i32> [#uses=0]
 	ret void

Modified: llvm/trunk/tools/opt/Debugify.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/opt/Debugify.cpp?rev=333237&r1=333236&r2=333237&view=diff
==============================================================================
--- llvm/trunk/tools/opt/Debugify.cpp (original)
+++ llvm/trunk/tools/opt/Debugify.cpp Thu May 24 16:00:23 2018
@@ -121,6 +121,12 @@ bool applyDebugifyMetadata(Module &M,
   addDebugifyOperand(NextVar - 1);  // Original number of variables.
   assert(NMD->getNumOperands() == 2 &&
          "llvm.debugify should have exactly 2 operands!");
+
+  // Claim that this synthetic debug info is valid.
+  StringRef DIVersionKey = "Debug Info Version";
+  if (!M.getModuleFlag(DIVersionKey))
+    M.addModuleFlag(Module::Warning, DIVersionKey, DEBUG_METADATA_VERSION);
+
   return true;
 }
 
@@ -270,10 +276,12 @@ struct CheckDebugifyFunctionPass : publi
     Module &M = *F.getParent();
     auto FuncIt = F.getIterator();
     return checkDebugifyMetadata(M, make_range(FuncIt, std::next(FuncIt)),
-                                 NameOfWrappedPass, "CheckFunctionDebugify", Strip);
+                                 NameOfWrappedPass, "CheckFunctionDebugify",
+                                 Strip);
   }
 
-  CheckDebugifyFunctionPass(bool Strip = false, StringRef NameOfWrappedPass = "")
+  CheckDebugifyFunctionPass(bool Strip = false,
+                            StringRef NameOfWrappedPass = "")
       : FunctionPass(ID), Strip(Strip), NameOfWrappedPass(NameOfWrappedPass) {}
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {




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