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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
27 lines
1003 B
LLVM
27 lines
1003 B
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu -frame-pointer=all | FileCheck %s
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define i32 @_Z4funci(i32 %a) ssp {
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; CHECK: mflr 0
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; CHECK-NEXT: stw 0, 4(1)
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; CHECK-NEXT: stwu 1, -32(1)
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; CHECK-NEXT: stw 31, 28(1)
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; CHECK: mr 31, 1
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entry:
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%a_addr = alloca i32 ; <i32*> [#uses=2]
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%retval = alloca i32 ; <i32*> [#uses=2]
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%0 = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i32 %a, i32* %a_addr
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%1 = call i32 @_Z3barPi(i32* %a_addr) ; <i32> [#uses=1]
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store i32 %1, i32* %0, align 4
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%2 = load i32, i32* %0, align 4 ; <i32> [#uses=1]
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store i32 %2, i32* %retval, align 4
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br label %return
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return: ; preds = %entry
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%retval1 = load i32, i32* %retval ; <i32> [#uses=1]
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ret i32 %retval1
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}
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declare i32 @_Z3barPi(i32*)
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