3050061793
AsmPrinter may switch the current section when e.g., emitting a jump table for a switch. `.stack_sizes` should still be linked to the function section. If the section is wrong, readelf emits a warning "relocation symbol is not in the expected section".
64 lines
1.4 KiB
LLVM
64 lines
1.4 KiB
LLVM
; RUN: llc -mtriple=aarch64 -aarch64-min-jump-table-entries=4 -stack-size-section %s -o - | FileCheck %s
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; CHECK-LABEL: .section .stack_sizes,"o",@progbits,.text{{$}}
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; CHECK-NEXT: .xword .Lfunc_begin0
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; CHECK-NEXT: .byte 0
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define void @empty() {
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ret void
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}
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; CHECK-LABEL: .section .stack_sizes,"o",@progbits,.text{{$}}
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; CHECK-NEXT: .xword .Lfunc_begin1
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; CHECK-NEXT: .ascii "\200\001"
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define void @non_empty() #0 {
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alloca [32 x i32]
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ret void
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}
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; CHECK-LABEL: dynalloc:
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; CHECK-NOT: .section .stack_sizes
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define void @dynalloc(i32 %n) #0 {
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alloca i32, i32 %n
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ret void
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}
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; Check that .stack_sizes section is linked to the function's section (.text),
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; and not to the section containing the jump table (.rodata).
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; CHECK-LABEL: linked_section:
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; CHECK: .section .rodata,"a",@progbits
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; CHECK: .section .stack_sizes,"o",@progbits,.text
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; CHECK-NEXT: .xword .Lfunc_begin3
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; CHECK-NEXT: .ascii "\220\001"
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declare void @case0()
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declare void @case1()
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declare void @case2()
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declare void @case3()
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define void @linked_section(i32 %x) {
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%arr = alloca [32 x i32]
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switch i32 %x, label %sw.epilog [
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i32 0, label %sw.bb0
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i32 1, label %sw.bb1
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i32 2, label %sw.bb2
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i32 3, label %sw.bb3
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]
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sw.bb0:
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call void @case0()
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ret void
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sw.bb1:
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call void @case1()
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ret void
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sw.bb2:
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call void @case2()
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ret void
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sw.bb3:
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call void @case3()
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ret void
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sw.epilog:
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ret void
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}
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