e6bf48d110
As of revea222be0d, LLVMs assembler will actually try to honour the "fill value" part of p2align directives. X86 printed these as 0x90, which isn't actually what it wanted: we want multi-byte nops for .text padding. Compiling via a textual assembly file produces single-byte nop padding sinceea222be0dbut the built-in assembler will produce multi-byte nops. This divergent behaviour is undesirable. To fix: don't set the byte padding field for x86, which allows the assembler to pick multi-byte nops. Test that we get the same multi-byte padding when compiled via textual assembly or directly to object file. Added same-align-bytes-with-llasm-llobj.ll to that effect, updated numerous other tests to not contain check-lines for the explicit padding.
29 lines
1.1 KiB
LLVM
29 lines
1.1 KiB
LLVM
; RUN: llc -mtriple x86_64-pc-linux < %s | FileCheck %s
|
|
|
|
; Test that we don't pollute the start of the file with debug sections
|
|
|
|
; CHECK: .text
|
|
; CHECK-NEXT: .file "<stdin>"
|
|
; CHECK-NEXT: .globl f
|
|
; CHECK-NEXT: .p2align 4
|
|
; CHECK-NEXT: .type f,@function
|
|
; CHECK-NEXT: f: # @f
|
|
|
|
; CHECK: .section .debug_str
|
|
|
|
define void @f() !dbg !4 {
|
|
ret void, !dbg !9
|
|
}
|
|
!llvm.dbg.cu = !{!0}
|
|
!llvm.module.flags = !{!7, !8}
|
|
|
|
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "foo", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
|
|
!1 = !DIFile(filename: "/foo/test.c", directory: "/foo")
|
|
!2 = !{}
|
|
!4 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !2)
|
|
!5 = !DISubroutineType(types: !6)
|
|
!6 = !{null}
|
|
!7 = !{i32 2, !"Dwarf Version", i32 4}
|
|
!8 = !{i32 2, !"Debug Info Version", i32 3}
|
|
!9 = !DILocation(line: 1, column: 15, scope: !4)
|