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This patch is a followup patch to https://reviews.llvm.org/D105760 which adds this relocation. This handles the relocation in lld. The s_branch family of instruction does the following: PC = PC + signext(simm * 4) + 4 so we we do the opposite on the target address before writing it in the instruction stream. Reviewed By: MaskRay Differential Revision: https://reviews.llvm.org/D105761
39 lines
705 B
ArmAsm
39 lines
705 B
ArmAsm
# REQUIRES: amdgpu
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# RUN: split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=amdgcn--amdhsa -mcpu=fiji %t/asm -o %t.o
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# RUN: ld.lld %t.o -o %t/out --script %t/script
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# RUN: llvm-objdump -d %t/out | FileCheck %s
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#--- script
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SECTIONS {
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. = 0x1000;
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.text.likely : { *(.text.likely) }
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. = 0x2000;
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.text : { *(.text) }
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. = 0x3000;
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.text.unlikely : { *(.text.unlikely) }
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}
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#--- asm
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.section .text.likely
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hot1:
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s_add_i32 s15, s15, 1
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hot2:
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s_add_i32 s13, s13, 1
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.text
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foo:
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s_branch cold2
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s_branch hot2
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.section .text.unlikely
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cold1:
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s_add_i32 s15, s15, 1
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s_add_i32 s14, s14, 1
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cold2:
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s_add_i32 s13, s13, 1
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# CHECK: <foo>
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# CHECK-NEXT: s_branch 1025
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# CHECK-NEXT: s_branch 64511
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