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https://github.com/RPCS3/llvm.git
synced 2026-07-01 21:04:04 -04:00
Hsiangkai Wang
82ea6cfac0
In debug frame information, some fields, e.g., Length in CIE/FDE and Offset in FDE are attributes to describe the structure of CIE/FDE. They are not related to the relaxed code. However, these attributes are symbol differences. So, in current design, these attributes will be filled as zero and LLVM generates relocations for them. We only need to generate relocations for symbols in executable sections. So, if the symbols are not located in executable sections, we still evaluate their values under relaxation. Differential Revision: https://reviews.llvm.org/D61584 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@366531 91177308-0d34-0410-b5e6-96231b3b80d8
63 lines
1.8 KiB
LLVM
63 lines
1.8 KiB
LLVM
; RUN: llc -filetype=obj -mtriple=riscv32 -mattr=+relax %s -o - \
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; RUN: | llvm-readobj -r | FileCheck -check-prefix=RELAX %s
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; RUN: llc -filetype=obj -mtriple=riscv32 -mattr=+relax %s -o - \
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; RUN: | llvm-dwarfdump --debug-frame - \
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; RUN: | FileCheck -check-prefix=RELAX-DWARFDUMP %s
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;
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; RELAX: Section{{.*}}.rela.{{eh|debug}}_frame {
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; RELAX-NOT: {{[}]}}
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; RELAX-NOT: 0x0 R_RISCV_ADD32
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; RELAX-NOT: 0x0 R_RISCV_SUB32
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; RELAX-NOT: {{[}]}}
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; RELAX: 0x20 R_RISCV_ADD32
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; RELAX: 0x20 R_RISCV_SUB32
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; RELAX-NOT: {{[}]}}
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; RELAX: 0x25 R_RISCV_SET6
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; RELAX: 0x25 R_RISCV_SUB6
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;
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; RELAX-DWARFDUMP: CIE
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; RELAX-DWARFDUMP: DW_CFA_advance_loc
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; RELAX-DWARFDUMP: DW_CFA_def_cfa_offset
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; RELAX-DWARFDUMP: DW_CFA_offset
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; RELAX-DWARFDUMP: DW_CFA_restore
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source_filename = "frame.c"
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; Function Attrs: noinline nounwind optnone
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define i32 @init() {
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entry:
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ret i32 0
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}
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; Function Attrs: noinline nounwind optnone
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define i32 @foo(i32 signext %value) {
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entry:
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%value.addr = alloca i32, align 4
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store i32 %value, i32* %value.addr, align 4
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%0 = load i32, i32* %value.addr, align 4
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ret i32 %0
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}
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; Function Attrs: noinline nounwind optnone
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define i32 @bar() {
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entry:
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%result = alloca i32, align 4
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%v = alloca i32, align 4
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%call = call i32 @init()
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store i32 %call, i32* %v, align 4
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%0 = load i32, i32* %v, align 4
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%call1 = call i32 @foo(i32 signext %0)
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store i32 %call1, i32* %result, align 4
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%1 = load i32, i32* %result, align 4
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ret i32 %1
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "line.c", directory: "./")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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