| ; RUN: opt < %s -simple-loop-unswitch -S | FileCheck %s |
| ; RUN: opt < %s -simple-loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa -S | FileCheck %s |
| |
| ; In cases where two address spaces do not have the same size pointer, the |
| ; input for the addrspacecast should not be used as a substitute for itself |
| ; when manipulating the pointer. |
| |
| target datalayout = "e-m:e-p:16:16-p1:32:16-i32:16-i64:16-n8:16" |
| |
| define void @foo() { |
| ; CHECK-LABEL: @foo |
| entry: |
| %arrayidx.i1 = getelementptr inbounds i16, i16* undef, i16 undef |
| %arrayidx.i = addrspacecast i16* %arrayidx.i1 to i16 addrspace(1)* |
| br i1 undef, label %for.body.i, label %bar.exit |
| |
| for.body.i: ; preds = %for.body.i, %entry |
| ; When we call makeLoopInvariant (i.e. trivial LICM) on this load, it |
| ; will try to find the base object to prove deferenceability. If we look |
| ; through the addrspacecast, we'll fail an assertion about bitwidths matching |
| ; CHECK-LABEL: for.body.i |
| ; CHECK: %0 = load i16, i16 addrspace(1)* %arrayidx.i, align 2 |
| %0 = load i16, i16 addrspace(1)* %arrayidx.i, align 2 |
| %cmp1.i = icmp eq i16 %0, 0 |
| br i1 %cmp1.i, label %bar.exit, label %for.body.i |
| |
| bar.exit: ; preds = %for.body.i, %entry |
| ret void |
| } |
