diff options
Diffstat (limited to 'test/Transforms/IRCE/single-access-no-preloop.ll')
| -rw-r--r-- | test/Transforms/IRCE/single-access-no-preloop.ll | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/test/Transforms/IRCE/single-access-no-preloop.ll b/test/Transforms/IRCE/single-access-no-preloop.ll new file mode 100644 index 0000000..4d47ba8 --- /dev/null +++ b/test/Transforms/IRCE/single-access-no-preloop.ll @@ -0,0 +1,116 @@ +; RUN: opt -irce -S < %s | FileCheck %s + +define void @single_access_no_preloop_no_offset(i32 *%arr, i32 *%a_len_ptr, i32 %n) { + entry: + %len = load i32* %a_len_ptr, !range !0 + %first.itr.check = icmp sgt i32 %n, 0 + br i1 %first.itr.check, label %loop, label %exit + + loop: + %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ] + %idx.next = add i32 %idx, 1 + %abc = icmp slt i32 %idx, %len + br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1 + + in.bounds: + %addr = getelementptr i32* %arr, i32 %idx + store i32 0, i32* %addr + %next = icmp slt i32 %idx.next, %n + br i1 %next, label %loop, label %exit + + out.of.bounds: + ret void + + exit: + ret void +} + +; CHECK-LABEL: single_access_no_preloop + +; CHECK-LABEL: loop: +; CHECK: br i1 true, label %in.bounds, label %out.of.bounds + +; CHECK-LABEL: main.exit.selector: +; CHECK-NEXT: [[continue:%[^ ]+]] = icmp slt i32 %idx.next, %n +; CHECK-NEXT: br i1 [[continue]], label %main.pseudo.exit, label %exit.loopexit + +; CHECK-LABEL: main.pseudo.exit: +; CHECK-NEXT: %idx.copy = phi i32 [ 0, %loop.preheader ], [ %idx.next, %main.exit.selector ] +; CHECK-NEXT: %indvar.end = phi i32 [ 0, %loop.preheader ], [ %idx.next, %main.exit.selector ] +; CHECK-NEXT: br label %postloop + +; CHECK-LABEL: postloop: +; CHECK-NEXT: br label %loop.postloop + +; CHECK-LABEL: loop.postloop: +; CHECK-NEXT: %idx.postloop = phi i32 [ %idx.next.postloop, %in.bounds.postloop ], [ %idx.copy, %postloop ] +; CHECK-NEXT: %idx.next.postloop = add i32 %idx.postloop, 1 +; CHECK-NEXT: %abc.postloop = icmp slt i32 %idx.postloop, %len +; CHECK-NEXT: br i1 %abc.postloop, label %in.bounds.postloop, label %out.of.bounds + +; CHECK-LABEL: in.bounds.postloop: +; CHECK-NEXT: %addr.postloop = getelementptr i32* %arr, i32 %idx.postloop +; CHECK-NEXT: store i32 0, i32* %addr.postloop +; CHECK-NEXT: %next.postloop = icmp slt i32 %idx.next.postloop, %n +; CHECK-NEXT: br i1 %next.postloop, label %loop.postloop, label %exit.loopexit + + +define void @single_access_no_preloop_with_offset(i32 *%arr, i32 *%a_len_ptr, i32 %n) { + entry: + %len = load i32* %a_len_ptr, !range !0 + %first.itr.check = icmp sgt i32 %n, 0 + br i1 %first.itr.check, label %loop, label %exit + + loop: + %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ] + %idx.next = add i32 %idx, 1 + %idx.for.abc = add i32 %idx, 4 + %abc = icmp slt i32 %idx.for.abc, %len + br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1 + + in.bounds: + %addr = getelementptr i32* %arr, i32 %idx.for.abc + store i32 0, i32* %addr + %next = icmp slt i32 %idx.next, %n + br i1 %next, label %loop, label %exit + + out.of.bounds: + ret void + + exit: + ret void +} + +; CHECK-LABEL: single_access_no_preloop_with_offset + +; CHECK-LABEL: loop.preheader: +; CHECK: [[not_n:[^ ]+]] = sub i32 -1, %n +; CHECK: [[not_safe_range_end:[^ ]+]] = sub i32 3, %len +; CHECK: [[not_exit_main_loop_at_hiclamp_cmp:[^ ]+]] = icmp sgt i32 [[not_n]], [[not_safe_range_end]] +; CHECK: [[not_exit_main_loop_at_hiclamp:[^ ]+]] = select i1 [[not_exit_main_loop_at_hiclamp_cmp]], i32 [[not_n]], i32 [[not_safe_range_end]] +; CHECK: [[exit_main_loop_at_hiclamp:[^ ]+]] = sub i32 -1, [[not_exit_main_loop_at_hiclamp]] +; CHECK: [[exit_main_loop_at_loclamp_cmp:[^ ]+]] = icmp sgt i32 [[exit_main_loop_at_hiclamp]], 0 +; CHECK: [[exit_main_loop_at_loclamp:[^ ]+]] = select i1 [[exit_main_loop_at_loclamp_cmp]], i32 [[exit_main_loop_at_hiclamp]], i32 0 +; CHECK: [[enter_main_loop:[^ ]+]] = icmp slt i32 0, [[exit_main_loop_at_loclamp]] +; CHECK: br i1 [[enter_main_loop]], label %loop, label %main.pseudo.exit + +; CHECK-LABEL: loop: +; CHECK: br i1 true, label %in.bounds, label %out.of.bounds + +; CHECK-LABEL: in.bounds: +; CHECK: [[continue_main_loop:[^ ]+]] = icmp slt i32 %idx.next, [[exit_main_loop_at_loclamp]] +; CHECK: br i1 [[continue_main_loop]], label %loop, label %main.exit.selector + +; CHECK-LABEL: main.pseudo.exit: +; CHECK: %idx.copy = phi i32 [ 0, %loop.preheader ], [ %idx.next, %main.exit.selector ] +; CHECK: br label %postloop + +; CHECK-LABEL: loop.postloop: +; CHECK: %idx.postloop = phi i32 [ %idx.next.postloop, %in.bounds.postloop ], [ %idx.copy, %postloop ] + +; CHECK-LABEL: in.bounds.postloop: +; CHECK: %next.postloop = icmp slt i32 %idx.next.postloop, %n +; CHECK: br i1 %next.postloop, label %loop.postloop, label %exit.loopexit + +!0 = !{i32 0, i32 2147483647} +!1 = !{!"branch_weights", i32 64, i32 4} |