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; RUN: llc < %s | FileCheck %s
target triple = "nvptx64-nvidia-cuda"
declare void @llvm.nvvm.barrier0()
; Load a value, then syncthreads. Branch, and use the loaded value only on one
; side of the branch. The load shouldn't be sunk beneath the call, because
; syncthreads is modeled as maystore.
define i32 @f(i32 %x, i32* %ptr, i1 %cond) {
Start:
; CHECK: ld.u32
%ptr_val = load i32, i32* %ptr
; CHECK: bar.sync
call void @llvm.nvvm.barrier0()
br i1 %cond, label %L1, label %L2
L1:
%ptr_val2 = add i32 %ptr_val, 100
br label %L2
L2:
%v4 = phi i32 [ %x, %Start ], [ %ptr_val2, %L1 ]
%v5 = add i32 %v4, 1000
ret i32 %v5
}
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