| ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -instcombine -S | FileCheck %s |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| |
| %struct.coordinate = type { i32, i32 } |
| |
| ; Make sure that we don't generate a wide load when accessing the struct. |
| ; struct coordinate { |
| ; int x; |
| ; int y; |
| ; }; |
| ; |
| ; |
| ; int foo(struct coordinate *A, int n) { |
| ; |
| ; int sum = 0; |
| ; for (int i = 0; i < n; ++i) |
| ; sum += A[i].x; |
| ; |
| ; return sum; |
| ; } |
| |
| ;CHECK-LABEL: @foo( |
| ;CHECK-NOT: load <4 x i32> |
| ;CHECK: ret |
| define i32 @foo(%struct.coordinate* nocapture %A, i32 %n) nounwind uwtable readonly ssp { |
| entry: |
| %cmp4 = icmp sgt i32 %n, 0 |
| br i1 %cmp4, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.body |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] |
| %sum.05 = phi i32 [ %add, %for.body ], [ 0, %entry ] |
| %x = getelementptr inbounds %struct.coordinate, %struct.coordinate* %A, i64 %indvars.iv, i32 0 |
| %0 = load i32, i32* %x, align 4 |
| %add = add nsw i32 %0, %sum.05 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body, %entry |
| %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] |
| ret i32 %sum.0.lcssa |
| } |
| |
| %struct.lit = type { i32 } |
| |
| ; Verify that we still vectorize the access if the struct has the same size as |
| ; the loaded element. |
| ; struct lit { |
| ; int x; |
| ; }; |
| ; |
| ; |
| ; int bar(struct lit *A, int n) { |
| ; |
| ; int sum = 0; |
| ; for (int i = 0; i < n; ++i) |
| ; sum += A[i].x; |
| ; |
| ; return sum; |
| ; } |
| |
| ;CHECK-LABEL: @bar( |
| ;CHECK: load <4 x i32> |
| ;CHECK: ret |
| define i32 @bar(%struct.lit* nocapture %A, i32 %n) nounwind uwtable readonly ssp { |
| entry: |
| %cmp4 = icmp sgt i32 %n, 0 |
| br i1 %cmp4, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.body |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] |
| %sum.05 = phi i32 [ %add, %for.body ], [ 0, %entry ] |
| %x = getelementptr inbounds %struct.lit, %struct.lit* %A, i64 %indvars.iv, i32 0 |
| %0 = load i32, i32* %x, align 4 |
| %add = add nsw i32 %0, %sum.05 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body, %entry |
| %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ] |
| ret i32 %sum.0.lcssa |
| } |