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".
72 lines
1.5 KiB
LLVM
72 lines
1.5 KiB
LLVM
; RUN: llc < %s -mtriple=s390x-linux-gnu -stack-size-section | FileCheck %s
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; CHECK-LABEL: func1:
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; CHECK-NEXT: .Lfunc_begin0:
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; CHECK: .section .stack_sizes,"o",@progbits,.text{{$}}
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; CHECK-NEXT: .quad .Lfunc_begin0
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; CHECK-NEXT: .byte 0
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define void @func1(i32, i32) #0 {
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ret void
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}
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; CHECK-LABEL: func2:
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; CHECK-NEXT: .Lfunc_begin1:
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; CHECK: .section .stack_sizes,"o",@progbits,.text{{$}}
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; CHECK-NEXT: .quad .Lfunc_begin1
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; CHECK-NEXT: .ascii "\250\001"
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define void @func2(i32, i32) #0 {
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alloca i32, align 4
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alloca i32, align 4
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ret void
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}
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; CHECK-LABEL: func3:
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; CHECK-NEXT: .Lfunc_begin2:
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; CHECK: .section .stack_sizes,"o",@progbits,.text{{$}}
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; CHECK-NEXT: .quad .Lfunc_begin2
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; CHECK-NEXT: .ascii "\250\001"
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define void @func3() #0 {
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alloca i32, align 4
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call void @func1(i32 1, i32 2)
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ret void
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}
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; CHECK-LABEL: dynalloc:
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; CHECK-NOT: .section .stack_sizes
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define void @dynalloc(i32 %N) #0 {
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alloca i32, i32 %N
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ret void
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}
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; Check that .stack_sizes section is linked to the function's section (.text),
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; and not to the section containing the jump table (.rodata).
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; CHECK-LABEL: .section .stack_sizes,"o",@progbits,.text{{$}}
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; CHECK-NEXT: .quad .Lfunc_begin4
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; CHECK-NEXT: .ascii "\260!"
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define i32 @linked_section(i32 %x) {
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%arr = alloca [1024 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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ret i32 0
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sw.bb1:
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ret i32 1
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sw.bb2:
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ret i32 2
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sw.bb3:
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ret i32 3
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sw.epilog:
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ret i32 -1
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}
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attributes #0 = { "frame-pointer"="all" }
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