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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
70 lines
1.9 KiB
LLVM
70 lines
1.9 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=arm64-none-linux-gnu -frame-pointer=all -disable-post-ra < %s | FileCheck %s
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declare void @use_addr(i8*)
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@addr = global i8* null
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define void @test_bigframe() {
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; CHECK-LABEL: test_bigframe:
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; CHECK: .cfi_startproc
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%var1 = alloca i8, i32 20000000
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%var2 = alloca i8, i32 16
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%var3 = alloca i8, i32 20000000
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; CHECK: sub sp, sp, #4095, lsl #12
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; CHECK: sub sp, sp, #4095, lsl #12
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; CHECK: sub sp, sp, #1575, lsl #12
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; CHECK: sub sp, sp, #2576
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; CHECK: .cfi_def_cfa_offset 40000032
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; CHECK: add [[TMP:x[0-9]+]], sp, #4095, lsl #12
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; CHECK: add [[TMP1:x[0-9]+]], [[TMP]], #787, lsl #12
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; CHECK: add {{x[0-9]+}}, [[TMP1]], #3344
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store volatile i8* %var1, i8** @addr
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%var1plus2 = getelementptr i8, i8* %var1, i32 2
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store volatile i8* %var1plus2, i8** @addr
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; CHECK: add [[TMP:x[0-9]+]], sp, #4095, lsl #12
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; CHECK: add [[TMP1:x[0-9]+]], [[TMP]], #787, lsl #12
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; CHECK: add {{x[0-9]+}}, [[TMP1]], #3328
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store volatile i8* %var2, i8** @addr
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%var2plus2 = getelementptr i8, i8* %var2, i32 2
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store volatile i8* %var2plus2, i8** @addr
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store volatile i8* %var3, i8** @addr
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%var3plus2 = getelementptr i8, i8* %var3, i32 2
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store volatile i8* %var3plus2, i8** @addr
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; CHECK: add sp, sp, #4095, lsl #12
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; CHECK: add sp, sp, #4095, lsl #12
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; CHECK: add sp, sp, #1575, lsl #12
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; CHECK: add sp, sp, #2576
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; CHECK: .cfi_endproc
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ret void
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}
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define void @test_mediumframe() {
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; CHECK-LABEL: test_mediumframe:
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%var1 = alloca i8, i32 1000000
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%var2 = alloca i8, i32 16
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%var3 = alloca i8, i32 1000000
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; CHECK: sub sp, sp, #488, lsl #12
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; CHECK-NEXT: sub sp, sp, #1168
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store volatile i8* %var1, i8** @addr
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; CHECK: add [[VAR1ADDR:x[0-9]+]], sp, #244, lsl #12
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; CHECK: add [[VAR1ADDR]], [[VAR1ADDR]], #592
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; CHECK: add [[VAR2ADDR:x[0-9]+]], sp, #244, lsl #12
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; CHECK: add [[VAR2ADDR]], [[VAR2ADDR]], #576
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store volatile i8* %var2, i8** @addr
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; CHECK: add sp, sp, #488, lsl #12
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; CHECK: add sp, sp, #1168
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ret void
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}
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