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llvm-project/llvm/test/CodeGen/Hexagon/cfi-late.ll

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[Hexagon] Delay emission of CFI instructions Emit the CFI instructions after all code transformation have been done. This will avoid any interference between CFI instructions and packetization. llvm-svn: 250714
2015-10-20 01:46:01 +08:00
; RUN: llc -march=hexagon -enable-misched=false < %s | FileCheck %s
; This testcase causes the scheduler to crash for some reason. Disable
; it for now.
target datalayout = "e-m:e-p:32:32-i64:64-a:0-v32:32-n16:32"
target triple = "hexagon-unknown--elf"
; Check that allocframe was packetized with the two adds.
; CHECK: foo:
; CHECK: {
; CHECK-DAG: allocframe
; CHECK-DAG: add
; CHECK-DAG: add
; CHECK: }
; CHECK: dealloc_return
; CHECK: }
; Function Attrs: nounwind
DI: Reverse direction of subprogram -> function edge. Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
2015-11-06 06:03:56 +08:00
define i32 @foo(i32 %x, i32 %y) #0 !dbg !4 {
[Hexagon] Delay emission of CFI instructions Emit the CFI instructions after all code transformation have been done. This will avoid any interference between CFI instructions and packetization. llvm-svn: 250714
2015-10-20 01:46:01 +08:00
entry:
tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !14), !dbg !15
tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !14), !dbg !16
%add = add nsw i32 %x, 1, !dbg !17
%add1 = add nsw i32 %y, 1, !dbg !18
%call = tail call i32 @bar(i32 %add, i32 %add1) #3, !dbg !19
%add2 = add nsw i32 %call, 1, !dbg !20
ret i32 %add2, !dbg !21
}
declare i32 @bar(i32, i32) #1
; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
[Hexagon] Remove support for V4 llvm-svn: 344791
2018-10-20 01:31:11 +08:00
attributes #0 = { nounwind "target-cpu"="hexagonv5" }
attributes #1 = { "target-cpu"="hexagonv5" }
[Hexagon] Delay emission of CFI instructions Emit the CFI instructions after all code transformation have been done. This will avoid any interference between CFI instructions and packetization. llvm-svn: 250714
2015-10-20 01:46:01 +08:00
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!11, !12}
!llvm.ident = !{!13}
Remove irrelevant references to legacy git repositories from compiler identification lines in test-cases. (Doing so only because it's then easier to search for references which are actually important and need fixing.) llvm-svn: 351200
2019-01-16 00:18:52 +08:00
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
[Hexagon] Delay emission of CFI instructions Emit the CFI instructions after all code transformation have been done. This will avoid any interference between CFI instructions and packetization. llvm-svn: 250714
2015-10-20 01:46:01 +08:00
!1 = !DIFile(filename: "cfi-late.c", directory: "/test")
!2 = !{}
[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
!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !8)
[Hexagon] Delay emission of CFI instructions Emit the CFI instructions after all code transformation have been done. This will avoid any interference between CFI instructions and packetization. llvm-svn: 250714
2015-10-20 01:46:01 +08:00
!5 = !DISubroutineType(types: !6)
!6 = !{!7, !7, !7}
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !{!9, !10}
!9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 3, type: !7)
!10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 3, type: !7)
!11 = !{i32 2, !"Dwarf Version", i32 4}
!12 = !{i32 2, !"Debug Info Version", i32 3}
Remove irrelevant references to legacy git repositories from compiler identification lines in test-cases. (Doing so only because it's then easier to search for references which are actually important and need fixing.) llvm-svn: 351200
2019-01-16 00:18:52 +08:00
!13 = !{!"clang version 3.8.0"}
[Hexagon] Delay emission of CFI instructions Emit the CFI instructions after all code transformation have been done. This will avoid any interference between CFI instructions and packetization. llvm-svn: 250714
2015-10-20 01:46:01 +08:00
!14 = !DIExpression()
!15 = !DILocation(line: 3, column: 13, scope: !4)
!16 = !DILocation(line: 3, column: 20, scope: !4)
!17 = !DILocation(line: 4, column: 15, scope: !4)
!18 = !DILocation(line: 4, column: 20, scope: !4)
!19 = !DILocation(line: 4, column: 10, scope: !4)
!20 = !DILocation(line: 4, column: 24, scope: !4)
!21 = !DILocation(line: 4, column: 3, scope: !4)