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f7ea499702
Part of the effort to refactoring frame pointer code generation. We used to use two function attributes "no-frame-pointer-elim" and "no-frame-pointer-elim-non-leaf" to represent three kinds of frame pointer usage: (all) frames use frame pointer, (non-leaf) frames use frame pointer, (none) frame use frame pointer. This CL makes the idea explicit by using only one enum function attribute "frame-pointer" Option "-frame-pointer=" replaces "-disable-fp-elim" for tools such as llc. "no-frame-pointer-elim" and "no-frame-pointer-elim-non-leaf" are still supported for easy migration to "frame-pointer". tests are mostly updated with // replace command line args ‘-disable-fp-elim=false’ with ‘-frame-pointer=none’ grep -iIrnl '\-disable-fp-elim=false' * | xargs sed -i '' -e "s/-disable-fp-elim=false/-frame-pointer=none/g" // replace command line args ‘-disable-fp-elim’ with ‘-frame-pointer=all’ grep -iIrnl '\-disable-fp-elim' * | xargs sed -i '' -e "s/-disable-fp-elim/-frame-pointer=all/g" Patch by Yuanfang Chen (tabloid.adroit)! Differential Revision: https://reviews.llvm.org/D56351 llvm-svn: 351049
31 lines
1.0 KiB
LLVM
31 lines
1.0 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-linux-gnu | FileCheck -check-prefix=LINUX-NO-FP %s
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-linux-gnu -frame-pointer=all | FileCheck -check-prefix=LINUX-FP %s
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define void @func() {
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entry:
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unreachable
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}
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; An empty function is perfectly fine on ELF.
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; LINUX-NO-FP: func:
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; LINUX-NO-FP-NEXT: {{^}}.L[[BEGIN:.*]]:{{$}}
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; LINUX-NO-FP-NEXT: .cfi_startproc
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; LINUX-NO-FP-NEXT: {{^}}#
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; LINUX-NO-FP-NEXT: {{^}}.L[[END:.*]]:{{$}}
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; LINUX-NO-FP-NEXT: .size func, .L[[END]]-.L[[BEGIN]]
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; LINUX-NO-FP-NEXT: .cfi_endproc
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; A cfi directive cannot point to the end of a function.
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; LINUX-FP: func:
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; LINUX-FP-NEXT: {{^}}.L[[BEGIN:.*]]:{{$}}
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; LINUX-FP-NEXT: .cfi_startproc
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; LINUX-FP-NEXT: {{^}}#
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; LINUX-FP-NEXT: stwu 1, -16(1)
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; LINUX-FP-NEXT: stw 31, 12(1)
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; LINUX-FP-NEXT: .cfi_def_cfa_offset 16
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; LINUX-FP-NEXT: .cfi_offset r31, -4
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; LINUX-FP-NEXT: mr 31, 1
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; LINUX-FP-NEXT: {{^}}.L[[END:.*]]:{{$}}
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; LINUX-FP-NEXT: .size func, .L[[END]]-.L[[BEGIN]]
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; LINUX-FP-NEXT: .cfi_endproc
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