1# REQUIRES: x86 2# RUN: rm -rf %t; split-file %s %t 3 4# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o 5# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/same-size.s -o %t/same-size.o 6# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/smaller-size.s -o %t/smaller-size.o 7# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/zero-align.s -o %t/zero-align.o 8# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/zero-align-round-up.s -o %t/zero-align-round-up.o 9 10## Check that we pick the definition with the larger size, regardless of 11## its alignment. 12# RUN: %lld %t/test.o %t/smaller-size.o -order_file %t/order -o %t/test 13# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=8 14# RUN: %lld %t/smaller-size.o %t/test.o -order_file %t/order -o %t/test 15# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=8 16 17## When the sizes are equal, we pick the symbol whose file occurs later in the 18## command-line argument list. 19# RUN: %lld %t/test.o %t/same-size.o -order_file %t/order -o %t/test 20# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=16 21# RUN: %lld %t/same-size.o %t/test.o -order_file %t/order -o %t/test 22# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=8 23 24# RUN: %lld %t/test.o %t/zero-align.o -order_file %t/order -o %t/test 25# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=16 26# RUN: %lld %t/zero-align.o %t/test.o -order_file %t/order -o %t/test 27# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=16 28 29# RUN: %lld %t/test.o %t/zero-align-round-up.o -order_file %t/order -o %t/test 30# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=16 31# RUN: %lld %t/zero-align-round-up.o %t/test.o -order_file %t/order -o %t/test 32# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s -D#ALIGN=16 33 34# CHECK-LABEL: Sections: 35# CHECK: __common {{[0-9a-f]+}} [[#%.16x, COMMON_START:]] BSS 36 37# CHECK-LABEL: SYMBOL TABLE: 38# CHECK-DAG: [[#%.16x, COMMON_START]] g O __DATA,__common _check_size 39# CHECK-DAG: [[#%.16x, COMMON_START + 2]] g O __DATA,__common _end_marker 40# CHECK-DAG: [[#%.16x, COMMON_START + ALIGN]] g O __DATA,__common _check_alignment 41 42#--- order 43## Order is important as we determine the size of a given symbol via the 44## address of the next symbol. 45_check_size 46_end_marker 47_check_alignment 48 49#--- smaller-size.s 50.comm _check_size, 1, 1 51.comm _check_alignment, 1, 4 52 53#--- same-size.s 54.comm _check_size, 2, 1 55.comm _check_alignment, 2, 4 56 57#--- zero-align.s 58.comm _check_size, 2, 1 59## If alignment is set to zero, use the size to determine the alignment. 60.comm _check_alignment, 16, 0 61 62#--- zero-align-round-up.s 63.comm _check_size, 2, 1 64## If alignment is set to zero, use the size to determine the alignment. If the 65## size is not a power of two, round it up. (In this case, 14 rounds to 16.) 66.comm _check_alignment, 14, 0 67 68#--- test.s 69.comm _check_size, 2, 1 70.comm _end_marker, 1 71.comm _check_alignment, 2, 3 72 73.globl _main 74_main: 75 ret 76