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7342155b4c
failures with relocations. The code committed is a first cut at compatibility for emitted relocations in ELF .o. Why do this? because existing ARM tools like emitting relocs symbols as explicit relocations, not as section-offset relocs. Result is that with these changes, 1) relocs are now substantially identical what to gcc outputs. 2) larger apps (including many spec2k tests) compile, cross-link, and pass Added reminder fixme to tests for future conversion to .s form. llvm-svn: 124996
52 lines
2.0 KiB
LLVM
52 lines
2.0 KiB
LLVM
;; RUN: llc -mtriple=armv7-linux-gnueabi -O3 \
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;; RUN: -mcpu=cortex-a8 -mattr=-neon -mattr=+vfp2 -arm-reserve-r9 \
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;; RUN: -filetype=obj %s -o - | \
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;; RUN: elf-dump --dump-section-data | FileCheck -check-prefix=OBJ %s
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;; FIXME: This file needs to be in .s form!
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;; The args to llc are there to constrain the codegen only.
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;;
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;; Ensure no regression on ARM/gcc compatibility for
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;; emitting explicit symbol relocs for nonexternal symbols
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;; versus section symbol relocs (with offset) -
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;;
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;; Default llvm behavior is to emit as section symbol relocs nearly
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;; everything that is not an undefined external. Unfortunately, this
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;; diverges from what codesourcery ARM/gcc does!
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;;
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;; Tests that reloc to .L.str* show up as explicit symbols
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target triple = "armv7-none-linux-gnueabi"
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@.str = private constant [7 x i8] c"@null\0A\00", align 4
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@.str1 = private constant [8 x i8] c"@write\0A\00", align 4
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@.str2 = private constant [13 x i8] c"hello worldn\00", align 4
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@.str3 = private constant [7 x i8] c"@exit\0A\00", align 4
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declare i32 @mystrlen(i8* nocapture %s) nounwind readonly
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declare void @myhextochar(i32 %n, i8* nocapture %buffer) nounwind
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define i32 @main() nounwind {
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entry:
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%0 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([7 x i8]* @.str, i32 0, i32 0), i32 6) nounwind
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%1 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([8 x i8]* @.str1, i32 0, i32 0), i32 7) nounwind
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%2 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([13 x i8]* @.str2, i32 0, i32 0), i32 12) nounwind
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%3 = tail call i32 (...)* @write(i32 1, i8* getelementptr inbounds ([7 x i8]* @.str3, i32 0, i32 0), i32 6) nounwind
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tail call void @exit(i32 55) noreturn nounwind
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unreachable
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}
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declare i32 @write(...)
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declare void @exit(i32) noreturn nounwind
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;; OBJ: Symbol 0x00000002
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;; OBJ-NEXT: '.L.str'
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;; OBJ: Relocation 0x00000000
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;; OBJ-NEXT: 'r_offset',
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;; OBJ-NEXT: 'r_sym', 0x00000002
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;; OBJ-NEXT: 'r_type', 0x0000002b
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