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[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
; Test ensuring debug intrinsics do not affect generated function prologue.
;
; RUN: llc -O1 -mtriple=x86_64-unknown-unknown -o - %s | FileCheck %s
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
define i64 @fn1NoDebug(i64 %a) {
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
%call = call i64 @fn(i64 %a, i64 0)
ret i64 %call
}
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
; CHECK-LABEL: fn1NoDebug
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
; CHECK: popq %rcx
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
; CHECK-NEXT: ret
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
define i64 @fn1WithDebug(i64 %a) !dbg !4 {
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
%call = call i64 @fn(i64 %a, i64 0)
tail call void @llvm.dbg.value(metadata i64 %call, i64 0, metadata !5, metadata !6), !dbg !7
ret i64 %call
}
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
; CHECK-LABEL: fn1WithDebug
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
; CHECK: popq %rcx
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
; CHECK-NEXT: ret
%struct.Buffer = type { i8, [63 x i8] }
define void @fn2NoDebug(%struct.Buffer* byval align 64 %p1) {
ret void
}
; CHECK-LABEL: fn2NoDebug
; CHECK: and
; CHECK-NOT: add
; CHECK-NOT: sub
; CHECK: mov
; CHECK-NEXT: pop
; CHECK-NEXT: ret
define void @fn2WithDebug(%struct.Buffer* byval align 64 %p1) !dbg !4 {
call void @llvm.dbg.declare(metadata %struct.Buffer* %p1, metadata !5, metadata !6), !dbg !7
ret void
}
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
; CHECK-LABEL: fn2WithDebug
; CHECK: and
; CHECK-NOT: add
; CHECK-NOT: sub
; CHECK: mov
; CHECK-NEXT: pop
; CHECK-NEXT: ret
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
declare i64 @fn(i64, i64)
declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
[framelowering] Skip dbg values when getting next/previous instruction. Summary: In mergeSPUpdates, debug values need to be ignored when getting the previous element, otherwise debug data could have an impact on codegen. In eliminateCallFramePseudoInstr, debug values after the erased element could have an impact on codegen and should be skipped. Closes PR31319 (https://llvm.org/bugs/show_bug.cgi?id=31319) Reviewers: aprantl, MatzeB, mkuper Subscribers: gbedwell, llvm-commits Differential Revision: https://reviews.llvm.org/D27688 llvm-svn: 290955
2017-01-04 20:08:35 +08:00
declare void @llvm.dbg.declare(metadata, metadata, metadata)
[framelowering] Improve tracking of first CS pop instruction. Summary: This patch makes sure FirstCSPop and MBBI never point to DBG_VALUE instructions, which affected the code generated. Reviewers: mkuper, aprantl, MatzeB Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D27343 llvm-svn: 288794
2016-12-06 18:24:55 +08:00
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!2,!3}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0")
!1 = !DIFile(filename: "test.c", directory: "/")
!2 = !{i32 2, !"Dwarf Version", i32 4}
!3 = !{i32 2, !"Debug Info Version", i32 3}
!4 = distinct !DISubprogram(name: "withDebug", unit: !0)
!5 = !DILocalVariable(name: "w", scope: !4)
!6 = !DIExpression()
!7 = !DILocation(line: 210, column: 12, scope: !4)