| ; RUN: opt -S -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -mcpu=prescott < %s | FileCheck %s |
| |
| target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128" |
| target triple = "i386-unknown-freebsd11.0" |
| |
| @big = external global [0 x i32] |
| |
| ; PR18049 |
| ; We need to truncate the exit count to i32. This is legal because the |
| ; arithmetic is signed (%inc is nsw). |
| |
| ; CHECK-LABEL: tripcount |
| ; CHECK: trunc i64 %count to i32 |
| |
| define void @tripcount(i64 %count) { |
| entry: |
| %cmp6 = icmp sgt i64 %count, 0 |
| br i1 %cmp6, label %for.body.preheader, label %for.end |
| |
| for.body.preheader: |
| br label %for.body |
| |
| for.body: |
| %i.07 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] |
| %arrayidx = getelementptr inbounds [0 x i32], [0 x i32]* @big, i32 0, i32 %i.07 |
| %0 = load i32, i32* %arrayidx, align 4 |
| %neg = xor i32 %0, -1 |
| store i32 %neg, i32* %arrayidx, align 4 |
| %inc = add nsw i32 %i.07, 1 |
| %conv = sext i32 %inc to i64 |
| %cmp = icmp slt i64 %conv, %count |
| br i1 %cmp, label %for.body, label %for.end.loopexit |
| |
| for.end.loopexit: |
| br label %for.end |
| |
| for.end: |
| ret void |
| } |
