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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
2.7 KiB
LLVM
70 lines
2.7 KiB
LLVM
; RUN: llc -O0 -mtriple mips-unknown-linux-gnu -relocation-model=static < %s | FileCheck %s -check-prefix=STATIC
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; RUN: llc -O0 -mtriple mips-unknown-linux-gnu -relocation-model=static -frame-pointer=all < %s | FileCheck %s -check-prefix=STATIC-FP
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; RUN: llc -O0 -mtriple mips-unknown-linux-gnu -relocation-model=pic < %s | FileCheck %s -check-prefix=PIC
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; RUN: llc -O0 -mtriple mips-unknown-linux-gnu -relocation-model=pic -frame-pointer=all < %s | FileCheck %s -check-prefix=PIC-FP
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; Generated using clang -O0 -emit-llvm -S -target mipsel-unknown-linux -g test.c -o test.ll
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; test.c:
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;
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; void hello_world(void) {
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; printf("Hello, World!\n");
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; }
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@.str = private unnamed_addr constant [15 x i8] c"Hello, World!\0A\00", align 1
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define void @hello_world() #0 !dbg !4 {
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entry:
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; STATIC: addiu $sp, $sp, -{{[0-9]+}}
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; STATIC: sw $ra, {{[0-9]+}}($sp)
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; STATIC: .loc 1 2 3 prologue_end
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; STATIC: lui $[[R0:[0-9]+]], %hi($.str)
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; STATIC-FP: addiu $sp, $sp, -{{[0-9]+}}
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; STATIC-FP: sw $ra, {{[0-9]+}}($sp)
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; STATIC-FP: sw $fp, {{[0-9]+}}($sp)
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; STATIC-FP: move $fp, $sp
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; STATIC-FP: .loc 1 2 3 prologue_end
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; STATIC-FP: lui $[[R0:[0-9]+]], %hi($.str)
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; PIC: lui $[[R0:[0-9]+]], %hi(_gp_disp)
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; PIC: addiu $[[R0]], $[[R0]], %lo(_gp_disp)
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; PIC: addiu $sp, $sp, -{{[0-9]+}}
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; PIC: sw $ra, {{[0-9]+}}($sp)
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; PIC: addu $[[R1:[0-9]+]], $[[R0]], $25
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; PIC: .loc 1 2 3 prologue_end
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; PIC: lw $[[R2:[0-9]+]], %got($.str)($[[R1]])
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; PIC-FP: lui $[[R0:[0-9]+]], %hi(_gp_disp)
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; PIC-FP: addiu $[[R0]], $[[R0]], %lo(_gp_disp)
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; PIC-FP: addiu $sp, $sp, -{{[0-9]+}}
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; PIC-FP: sw $ra, {{[0-9]+}}($sp)
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; PIC-FP: sw $fp, {{[0-9]+}}($sp)
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; PIC-FP: move $fp, $sp
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; PIC-FP: addu $[[R1:[0-9]+]], $[[R0]], $25
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; PIC-FP: .loc 1 2 3 prologue_end
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; PIC-FP: lw $[[R2:[0-9]+]], %got($.str)($[[R1]])
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%call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str, i32 0, i32 0)), !dbg !10
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ret void, !dbg !11
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}
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declare i32 @printf(i8*, ...)
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attributes #0 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8}
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!llvm.ident = !{!9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "test.c", directory: "/tmp")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "hello_world", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null}
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{!"clang version 3.8.0"}
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!10 = !DILocation(line: 2, column: 3, scope: !4)
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!11 = !DILocation(line: 3, column: 1, scope: !4)
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