diff options
Diffstat (limited to 'llvm/test')
4 files changed, 71 insertions, 2 deletions
diff --git a/llvm/test/Transforms/InstCombine/alloca-cast-debuginfo.ll b/llvm/test/Transforms/InstCombine/alloca-cast-debuginfo.ll index bbed1ec75cf..b5a1f34ee05 100644 --- a/llvm/test/Transforms/InstCombine/alloca-cast-debuginfo.ll +++ b/llvm/test/Transforms/InstCombine/alloca-cast-debuginfo.ll @@ -41,7 +41,10 @@ entry: ; CHECK: %local = alloca i64, align 8 ; CHECK: call void @llvm.dbg.declare(metadata i64* %local, metadata !22, metadata !DIExpression()) ; CHECK: [[simplified:%.*]] = bitcast i64* %local to i8* -; CHECK: call void @llvm.dbg.value(metadata i8* [[simplified]], metadata !22, metadata !DIExpression()) +; +; Another dbg.value for "local" would be redundant here. +; CHECK-NOT: call void @llvm.dbg.value(metadata i8* [[simplified]], metadata !22, metadata !DIExpression()) +; ; CHECK: call void @escape(i8* [[simplified]]) ; CHECK: ret void diff --git a/llvm/test/Transforms/InstCombine/cast-mul-select.ll b/llvm/test/Transforms/InstCombine/cast-mul-select.ll index a59d954dac7..b140dfa2229 100644 --- a/llvm/test/Transforms/InstCombine/cast-mul-select.ll +++ b/llvm/test/Transforms/InstCombine/cast-mul-select.ll @@ -14,8 +14,8 @@ define i32 @mul(i32 %x, i32 %y) { ; instruction. ; DBGINFO-LABEL: @mul( ; DBGINFO-NEXT: [[C:%.*]] = mul i32 {{.*}} -; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[C]] ; DBGINFO-NEXT: [[D:%.*]] = and i32 {{.*}} +; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[C]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[D]] %A = trunc i32 %x to i8 diff --git a/llvm/test/Transforms/InstCombine/cast-set-preserve-signed-dbg-val.ll b/llvm/test/Transforms/InstCombine/cast-set-preserve-signed-dbg-val.ll new file mode 100644 index 00000000000..74fdfa88cd1 --- /dev/null +++ b/llvm/test/Transforms/InstCombine/cast-set-preserve-signed-dbg-val.ll @@ -0,0 +1,50 @@ +; RUN: opt -instcombine -S < %s | FileCheck %s + +; CHECK-LABEL: define {{.*}} @test5 +define i16 @test5(i16 %A) !dbg !34 { + ; CHECK: [[and:%.*]] = and i16 %A, 15 + + %B = sext i16 %A to i32, !dbg !40 + call void @llvm.dbg.value(metadata i32 %B, metadata !36, metadata !DIExpression()), !dbg !40 + + %C = and i32 %B, 15, !dbg !41 + call void @llvm.dbg.value(metadata i32 %C, metadata !37, metadata !DIExpression()), !dbg !41 + + ; Preserve the dbg.value for the DCE'd 32-bit 'and'. + ; + ; The high 16 bits of the original 'and' require sign-extending the new 16-bit and: + ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[and]], metadata [[C:![0-9]+]], + ; CHECK-SAME: metadata !DIExpression(DW_OP_dup, DW_OP_constu, 15, DW_OP_shr, DW_OP_lit0, DW_OP_not, DW_OP_mul, DW_OP_or, DW_OP_stack_value) + + %D = trunc i32 %C to i16, !dbg !42 + call void @llvm.dbg.value(metadata i16 %D, metadata !38, metadata !DIExpression()), !dbg !42 + + ; The dbg.value for a truncate should simply point to the result of the 16-bit 'and'. + ; CHECK-NEXT: call void @llvm.dbg.value(metadata i16 [[and]], metadata [[D:![0-9]+]], metadata !DIExpression()) + + ret i16 %D, !dbg !43 + ; CHECK-NEXT: ret i16 [[and]] +} + +declare void @llvm.dbg.value(metadata, metadata, metadata) + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!5} + +!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) +!1 = !DIFile(filename: "void", directory: "/") +!2 = !{} +!5 = !{i32 2, !"Debug Info Version", i32 3} +!7 = !DISubroutineType(types: !2) +!10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_signed) +!12 = !DIBasicType(name: "ty8", size: 8, encoding: DW_ATE_signed) +!34 = distinct !DISubprogram(name: "test5", linkageName: "test5", scope: null, file: !1, line: 12, type: !7, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized: true, unit: !0, retainedNodes: !35) +!35 = !{!36, !37, !38} +!36 = !DILocalVariable(name: "B", scope: !34, file: !1, line: 12, type: !10) +!37 = !DILocalVariable(name: "C", scope: !34, file: !1, line: 13, type: !10) +!38 = !DILocalVariable(name: "D", scope: !34, file: !1, line: 14, type: !39) +!39 = !DIBasicType(name: "ty16", size: 16, encoding: DW_ATE_signed) +!40 = !DILocation(line: 12, column: 1, scope: !34) +!41 = !DILocation(line: 13, column: 1, scope: !34) +!42 = !DILocation(line: 14, column: 1, scope: !34) +!43 = !DILocation(line: 15, column: 1, scope: !34) diff --git a/llvm/test/Transforms/InstCombine/debuginfo-variables.ll b/llvm/test/Transforms/InstCombine/debuginfo-variables.ll index 8c4aba8de8a..50fffbf88b1 100644 --- a/llvm/test/Transforms/InstCombine/debuginfo-variables.ll +++ b/llvm/test/Transforms/InstCombine/debuginfo-variables.ll @@ -1,5 +1,7 @@ ; RUN: opt < %s -debugify -instcombine -S | FileCheck %s +declare void @escape32(i32) + define i64 @test_sext_zext(i16 %A) { ; CHECK-LABEL: @test_sext_zext( ; CHECK-NEXT: [[C2:%.*]] = zext i16 %A to i64 @@ -10,6 +12,20 @@ define i64 @test_sext_zext(i16 %A) { ret i64 %c2 } +define i64 @test_used_sext_zext(i16 %A) { +; CHECK-LABEL: @test_used_sext_zext( +; CHECK-NEXT: [[C1:%.*]] = zext i16 %A to i32 +; CHECK-NEXT: call void @llvm.dbg.value(metadata i32 [[C1]], {{.*}}, metadata !DIExpression()) +; CHECK-NEXT: [[C2:%.*]] = zext i16 %A to i64 +; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 [[C2]], {{.*}}, metadata !DIExpression()) +; CHECK-NEXT: call void @escape32(i32 %c1) +; CHECK-NEXT: ret i64 %c2, !dbg !23 + %c1 = zext i16 %A to i32 + %c2 = sext i32 %c1 to i64 + call void @escape32(i32 %c1) + ret i64 %c2 +} + define void @test_or(i64 %A) { ; CHECK-LABEL: @test_or( ; CHECK-NEXT: call void @llvm.dbg.value(metadata i64 %A, {{.*}}, metadata !DIExpression(DW_OP_constu, 256, DW_OP_or, DW_OP_stack_value)) |
