| ; RUN: opt -passes='loop-vectorize' -mcpu=z13 -force-vector-width=2 -S < %s | FileCheck %s |
| ; |
| ; Forcing VF=2 to trigger vector code gen |
| ; |
| ; This is a test case to exercise more cases in truncateToMinimalBitWidths(). |
| ; Test passes if vector code is generated w/o hitting llvm_unreachable(). |
| ; |
| ; Performing minimal check in the output to ensure the loop is actually |
| ; vectorized. |
| ; |
| ; CHECK: vector.body |
| |
| target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64" |
| target triple = "s390x-ibm-linux" |
| |
| define void @test(i32 zeroext %width, ptr nocapture %row, i16 zeroext %src, ptr nocapture readonly %dst) { |
| entry: |
| %cmp10 = icmp eq i32 %width, 0 |
| br i1 %cmp10, label %for.end, label %for.body.lr.ph |
| |
| for.body.lr.ph: ; preds = %entry |
| %conv1 = zext i16 %src to i32 |
| br label %for.body |
| |
| for.body: ; preds = %for.inc, %for.body.lr.ph |
| %i.012 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ] |
| %sp.011 = phi ptr [ %row, %for.body.lr.ph ], [ %incdec.ptr, %for.inc ] |
| %0 = load i8, ptr %sp.011, align 1 |
| %conv = zext i8 %0 to i32 |
| %cmp2 = icmp eq i32 %conv, %conv1 |
| br i1 %cmp2, label %if.then, label %for.inc |
| |
| if.then: ; preds = %for.body |
| %1 = load i16, ptr %dst, align 2 |
| %conv4 = trunc i16 %1 to i8 |
| store i8 %conv4, ptr %sp.011, align 1 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body, %if.then |
| %inc = add nuw i32 %i.012, 1 |
| %incdec.ptr = getelementptr inbounds i8, ptr %sp.011, i64 1 |
| %exitcond = icmp eq i32 %inc, %width |
| br i1 %exitcond, label %for.end.loopexit, label %for.body |
| |
| for.end.loopexit: ; preds = %for.inc |
| br label %for.end |
| |
| for.end: ; preds = %for.end.loopexit, %entry |
| ret void |
| } |