llvm-for-llvmta/test/CodeGen/X86/align-branch-boundary-suppr...

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2022-04-25 10:02:23 +02:00
;; Test that we don't pad the x86-64 General Dynamic/Local Dynamic TLS code
;; sequence. It uses prefixes to allow linker relaxation. We need to disable
;; prefix or nop padding for it. For simplicity and consistency, disable for
;; Local Dynamic and 32-bit as well.
; RUN: llc -mtriple=i386 -relocation-model=pic -x86-branches-within-32B-boundaries < %s | FileCheck --check-prefixes=CHECK,32 %s
; RUN: llc -mtriple=x86_64 -relocation-model=pic -x86-branches-within-32B-boundaries < %s | FileCheck --check-prefixes=CHECK,64 %s
@gd = external thread_local global i32
@ld = internal thread_local global i32 0
define i32 @tls_get_addr() {
; CHECK-LABEL: tls_get_addr:
; CHECK: #noautopadding
; 32: leal gd@TLSGD(,%ebx), %eax
; 32: calll ___tls_get_addr@PLT
; 64: data16
; 64: leaq gd@TLSGD(%rip), %rdi
; 64: callq __tls_get_addr@PLT
; CHECK: #autopadding
; CHECK: #noautopadding
; 32: leal ld@TLSLDM(%ebx), %eax
; 32: calll ___tls_get_addr@PLT
; 64: leaq ld@TLSLD(%rip), %rdi
; 64: callq __tls_get_addr@PLT
; CHECK: #autopadding
%1 = load i32, i32* @gd
%2 = load i32, i32* @ld
%3 = add i32 %1, %2
ret i32 %3
}