File: gs-fold.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: llc < %s -mtriple=x86_64-unknown-freebsd | FileCheck %s --check-prefix=CHECK-FBSD
; RUN: llc < %s -mtriple=x86_64-unknown-linux | FileCheck %s --check-prefix=CHECK-LINUX
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"

%struct.thread = type { i32, i32, i32, i32 }

define i32 @test() nounwind uwtable {
entry:
  %0 = load volatile ptr, ptr addrspace(256) null
  %c = getelementptr inbounds %struct.thread, ptr %0, i64 0, i32 2
  %1 = load i32, ptr %c, align 4
  ret i32 %1
}

; Check that we are not assuming that gs contains the address of gs if we are not targeting Linux
; CHECK-FBSD: movq	%gs:0, %rax
; CHECK-FBSD: movl	8(%rax), %eax
; Check that we are assuming that gs contains the address of gs if we are targeting Linux
; CHECK-LINUX: movl	%gs:8, %eax