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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
26 lines
1.0 KiB
LLVM
26 lines
1.0 KiB
LLVM
; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -O1 | FileCheck %s --check-prefix=DISABLE-FP-ELIM
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; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -frame-pointer=all -O1 | FileCheck %s --check-prefix=DISABLE-FP-ELIM
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; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -frame-pointer=none -O1 | FileCheck %s --check-prefix=ENABLE-FP-ELIM
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; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -frame-pointer=none -O0 | FileCheck %s --check-prefix=DISABLE-FP-ELIM
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; Check that command line option "-frame-pointer=all" overrides function attribute
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; "no-frame-pointer-elim". Also, check frame pointer elimination is disabled
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; when fast-isel is used.
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; ENABLE-FP-ELIM-NOT: .setfp
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; DISABLE-FP-ELIM: .setfp r11, sp
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define i32 @foo1(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #0 {
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entry:
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%call = tail call i32 @foo2(i32 %a)
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%add = add i32 %c, %b
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%add1 = add i32 %add, %d
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%add2 = add i32 %add1, %e
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%add3 = add i32 %add2, %call
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ret i32 %add3
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}
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declare i32 @foo2(i32)
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attributes #0 = { nounwind "no-frame-pointer-elim"="true" }
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