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; RUN: llc < %s -fast-isel -mtriple=i386-apple-darwin -mcpu=generic | FileCheck %s
; RUN: llc < %s -fast-isel -mtriple=i386-apple-darwin -mcpu=atom | FileCheck -check-prefix=ATOM %s
; RUN: llc < %s -fast-isel -fast-isel-abort=3 -mtriple=x86_64 | FileCheck -check-prefix=ELF64 %s
@src = external dso_preemptable global i32
; rdar://6653118
define i32 @loadgv() nounwind {
entry:
%0 = load i32, ptr @src, align 4
%1 = load i32, ptr @src, align 4
%2 = add i32 %0, %1
store i32 %2, ptr @src
ret i32 %2
; This should fold one of the loads into the add.
; CHECK-LABEL: loadgv:
; CHECK: movl L_src$non_lazy_ptr, %eax
; CHECK: movl (%eax), %eax
; CHECK: movl L_src$non_lazy_ptr, %ecx
; CHECK: addl (%ecx), %eax
; CHECK: movl L_src$non_lazy_ptr, %ecx
; CHECK: movl %eax, (%ecx)
; CHECK: ret
; ATOM: loadgv:
; ATOM: movl L_src$non_lazy_ptr, %eax
; ATOM: movl (%eax), %eax
; ATOM: movl L_src$non_lazy_ptr, %ecx
; ATOM: addl (%ecx), %eax
; ATOM: movl L_src$non_lazy_ptr, %ecx
; ATOM: movl %eax, (%ecx)
; ATOM: ret
;; dso_preemptable src is loaded via GOT indirection.
; ELF64-LABEL: loadgv:
; ELF64: movq src@GOTPCREL(%rip), %rax
; ELF64-NEXT: movl (%rax), %eax
; ELF64-NEXT: movq src@GOTPCREL(%rip), %rcx
; ELF64-NEXT: addl (%rcx), %eax
; ELF64-NEXT: movq src@GOTPCREL(%rip), %rcx
; ELF64-NEXT: movl %eax, (%rcx)
; ELF64-NEXT: retq
}
%stuff = type { ptr }
@LotsStuff = external constant [4 x ptr]
define void @t(ptr %this) nounwind {
entry:
store ptr getelementptr ([4 x ptr], ptr @LotsStuff, i32 0, i32 2), ptr null, align 4
ret void
; CHECK: _t:
; CHECK: xorl %eax, %eax
; CHECK: movl L_LotsStuff$non_lazy_ptr, %ecx
; ATOM: _t:
; ATOM: movl L_LotsStuff$non_lazy_ptr, %e{{..}}
; ATOM: xorl %e{{..}}, %e{{..}}
}
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