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llvm-project/llvm/test/CodeGen/NVPTX/generic-to-nvvm-ir.ll

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[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
; Verify functionality of NVPTXGenericToNVVM.cpp pass.
;
[Verifier] Remove the -verify-debug-info cl::opt This cl::opt has been dead for a while. It's no longer possible to run the verifier without also verifying debug info. llvm-svn: 317288
2017-11-03 07:44:20 +08:00
; RUN: opt < %s -march nvptx64 -S -generic-to-nvvm | FileCheck %s
[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
target triple = "nvptx64-nvidia-cuda"
; Generic space variables should be converted to global space AKA addrspace(1).
; CHECK-DAG: @static_var = {{.*}}addrspace(1)
DebugInfo: New metadata representation for global variables. This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
2016-09-13 09:12:59 +08:00
@static_var = externally_initialized global i8 0, align 1, !dbg !4
[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
; CHECK-DAG: @.str = {{.*}}addrspace(1)
@.str = private unnamed_addr constant [4 x i8] c"XXX\00", align 1
; Function Attrs: convergent
define void @func() !dbg !8 {
;CHECK-LABEL: @func()
;CHECK-SAME: !dbg [[FUNCNODE:![0-9]+]]
entry:
[NVPTX] Use addrspacecast instead of target-specific intrinsics in NVPTXGenericToNVVM. Summary: NVPTXGenericToNVVM was using target-specific intrinsics to do address space casts. Using the addrspacecast instruction is (a lot) simpler. But it also has the advantage of being understandable to other passes. In particular, InferAddrSpaces is able to understand these address space casts and remove them in most cases. Reviewers: tra Subscribers: jholewinski, sanjoy, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D43914 llvm-svn: 326389
2018-03-01 07:57:48 +08:00
; References to the variables must be converted back to generic address space.
; CHECK-DAG: addrspacecast ([4 x i8] addrspace(1)* @.str to [4 x i8]*)
[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
%0 = load i8, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), align 1
call void @extfunc(i8 signext %0)
[NVPTX] Use addrspacecast instead of target-specific intrinsics in NVPTXGenericToNVVM. Summary: NVPTXGenericToNVVM was using target-specific intrinsics to do address space casts. Using the addrspacecast instruction is (a lot) simpler. But it also has the advantage of being understandable to other passes. In particular, InferAddrSpaces is able to understand these address space casts and remove them in most cases. Reviewers: tra Subscribers: jholewinski, sanjoy, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D43914 llvm-svn: 326389
2018-03-01 07:57:48 +08:00
; CHECK-DAG: addrspacecast (i8 addrspace(1)* @static_var to i8*)
[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
%1 = load i8, i8* @static_var, align 1
call void @extfunc(i8 signext %1)
ret void
; CHECK: ret void
}
declare void @extfunc(i8 signext)
!llvm.dbg.cu = !{!0}
; CHECK: !llvm.dbg.cu = !{[[CUNODE:![0-9]+]]}
!llvm.module.flags = !{!6, !7}
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1,
producer: "clang version 4.0.0",
isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
; CHECK: [[CUNODE]] = distinct !DICompileUnit({{.*}} globals: [[GLOBALSNODE:![0-9]+]]
!1 = !DIFile(filename: "foo.cu", directory: "/usr/local/google/home/tra/work/llvm/build/gpu/debug")
!2 = !{}
!3 = !{!4}
; Find list of global variables and make sure it's the one used by DICompileUnit
; CHECK: [[GLOBALSNODE]] = !{[[GVNODE:![0-9]+]]}
Canonicalize the representation of empty an expression in DIGlobalVariableExpression This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
2017-08-31 02:06:51 +08:00
!4 = !DIGlobalVariableExpression(var: !DIGlobalVariable(name: "static_var", scope: !0, file: !1, line: 2, type: !5, isLocal: false, isDefinition: true), expr: !DIExpression())
[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
; Debug info must also be updated to reflect new address space.
Canonicalize the representation of empty an expression in DIGlobalVariableExpression This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
2017-08-31 02:06:51 +08:00
; CHECK: [[GVNODE]] = !DIGlobalVariableExpression(var: [[GVVAR:.*]], expr: !DIExpression())
[IR] Remove the DIExpression field from DIGlobalVariable. This patch implements PR31013 by introducing a DIGlobalVariableExpression that holds a pair of DIGlobalVariable and DIExpression. Currently, DIGlobalVariables holds a DIExpression. This is not the best way to model this: (1) The DIGlobalVariable should describe the source level variable, not how to get to its location. (2) It makes it unsafe/hard to update the expressions when we call replaceExpression on the DIGLobalVariable. (3) It makes it impossible to represent a global variable that is in more than one location (e.g., a variable with multiple DW_OP_LLVM_fragment-s). We also moved away from attaching the DIExpression to DILocalVariable for the same reasons. This reapplies r289902 with additional testcase upgrades and a change to the Bitcode record for DIGlobalVariable, that makes upgrading the old format unambiguous also for variables without DIExpressions. <rdar://problem/29250149> https://llvm.org/bugs/show_bug.cgi?id=31013 Differential Revision: https://reviews.llvm.org/D26769 llvm-svn: 290153
2016-12-20 10:09:43 +08:00
; CHECK: [[GVVAR]] = !DIGlobalVariable(name: "static_var"
[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
; CHECK-SAME: scope: [[CUNODE]]
; CHECK-SAME: type: [[TYPENODE:![0-9]+]]
!5 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
; CHECK: [[TYPENODE]] = !DIBasicType(name: "char"
!6 = !{i32 2, !"Dwarf Version", i32 4}
!7 = !{i32 2, !"Debug Info Version", i32 3}
!8 = distinct !DISubprogram(name: "foo", linkageName: "func",
scope: !1, file: !1, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3,
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
[NVPTX] remove unnecessary named metadata update that happens to break debug info. Also added test case to verify IR changes done by NVPTXGenericToNVVM pass. Differential Revision: https://reviews.llvm.org/D22837 llvm-svn: 277520
2016-08-03 04:58:24 +08:00
; CHECK: [[FUNCNODE]] = distinct !DISubprogram(name: "foo",
; CHECK-SAME: type: [[STYPENODE:![0-9]+]]
; CHECK-SAME: unit: [[CUNODE]],
!9 = !DISubroutineType(types: !10)
; CHECK: [[STYPENODE]] = !DISubroutineType
!10 = !{null}