7620f03ef7
When both SHF_LINK_ORDER | SHF_GROUP flags are set, GNU assembler from 2.35 onwards (https://sourceware.org/PR25381 https://sourceware.org/binutils/docs/as/Section.html) parses the SHF_LINK_ORDER argument before section group name, different from us. This is unfortunate, but does not matter because the `.section` flag `o` is a niche feature only used by compiler instrumentations, not adopted by hand-written assembly, and using both flags is extremely rare. Let's just match GNU assembler. There is another benefit: we now support zero-flag section group with the SHF_LINK_ORDER flag, while previously there isn't a syntax. While here, print 'G' after 'o' to be clear that the 'G' argument is parsed after the 'o' argument. To make the diff smaller, we don't print 'G' after 'w' in the absence of 'o' for now.
56 lines
1.8 KiB
LLVM
56 lines
1.8 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-linux -stack-size-section | FileCheck %s --check-prefix=CHECK --check-prefix=GROUPS
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; PS4 'as' does not recognize the section attribute "o". So we have a simple .stack_sizes section on PS4.
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; RUN: llc < %s -mtriple=x86_64-scei-ps4 -stack-size-section | FileCheck %s --check-prefix=CHECK --check-prefix=NOGROUPS
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; CHECK-LABEL: func1:
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; CHECK-NEXT: .Lfunc_begin0:
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; GROUPS: .section .stack_sizes,"o",@progbits,.text{{$}}
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; NOGROUPS: .section .stack_sizes,"",@progbits
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; CHECK-NEXT: .quad .Lfunc_begin0
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; CHECK-NEXT: .byte 8
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define void @func1(i32, i32) #0 {
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alloca i32, align 4
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alloca i32, align 4
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ret void
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}
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; CHECK-LABEL: func2:
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; CHECK-NEXT: .Lfunc_begin1:
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; GROUPS: .section .stack_sizes,"o",@progbits,.text{{$}}
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; NOGROUPS: .section .stack_sizes,"",@progbits
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; CHECK-NEXT: .quad .Lfunc_begin1
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; CHECK-NEXT: .byte 24
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define void @func2() #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 that we still put .stack_sizes into the corresponding COMDAT group if any.
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; CHECK: .section .text._Z4fooTIiET_v,"axG",@progbits,_Z4fooTIiET_v,comdat
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; GROUPS: .section .stack_sizes,"oG",@progbits,.text._Z4fooTIiET_v,_Z4fooTIiET_v,comdat{{$}}
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; NOGROUPS: .section .stack_sizes,"",@progbits
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$_Z4fooTIiET_v = comdat any
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define linkonce_odr dso_local i32 @_Z4fooTIiET_v() comdat {
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ret i32 0
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}
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; CHECK: .section .text.func3,"ax",@progbits
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; GROUPS: .section .stack_sizes,"o",@progbits,.text.func3{{$}}
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; NOGROUPS: .section .stack_sizes,"",@progbits
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define dso_local i32 @func3() section ".text.func3" {
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%1 = alloca i32, align 4
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store i32 0, ptr %1, align 4
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ret i32 0
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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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attributes #0 = { "frame-pointer"="all" }
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