| ; RUN: opt %loadPolly -polly-opt-isl -polly-ast -analyze < %s | FileCheck %s --match-full-lines |
| ; RUN: opt %loadPolly -polly-opt-isl -polly-codegen -simplifycfg -S < %s | FileCheck %s --check-prefix=CODEGEN |
| ; |
| ; Partial unroll by a factor of 4. |
| ; |
| define void @func(i32 %n, double* noalias nonnull %A) { |
| entry: |
| br label %for |
| |
| for: |
| %j = phi i32 [0, %entry], [%j.inc, %inc] |
| %j.cmp = icmp slt i32 %j, %n |
| br i1 %j.cmp, label %body, label %exit |
| |
| body: |
| store double 42.0, double* %A |
| br label %inc |
| |
| inc: |
| %j.inc = add nuw nsw i32 %j, 1 |
| br label %for, !llvm.loop !2 |
| |
| exit: |
| br label %return |
| |
| return: |
| ret void |
| } |
| |
| |
| !2 = distinct !{!2, !4, !5, !6} |
| !4 = !{!"llvm.loop.unroll.enable", i1 true} |
| !5 = !{!"llvm.loop.unroll.count", i4 4} |
| !6 = !{!"llvm.loop.unroll.followup_unrolled", !7} |
| |
| !7 = distinct !{!7, !8} |
| !8 = !{!"llvm.loop.id", !"This-is-the-unrolled-loop"} |
| |
| |
| ; CHECK-LABEL: Printing analysis 'Polly - Optimize schedule of SCoP' for region: 'for => return' in function 'func': |
| ; CHECK: domain: "[n] -> { Stmt_body[i0] : 0 <= i0 < n }" |
| ; CHECKL mark: "Loop with Metadata" |
| ; CHECK: schedule: "[n] -> [{ Stmt_body[i0] -> [(i0 - (i0) mod 4)] }]" |
| ; CHECK: sequence: |
| ; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (i0) mod 4 = 0 }" |
| ; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (-1 + i0) mod 4 = 0 }" |
| ; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (2 + i0) mod 4 = 0 }" |
| ; CHECK-NEXT: - filter: "[n] -> { Stmt_body[i0] : (1 + i0) mod 4 = 0 }" |
| |
| |
| ; CHECK-LABEL: Printing analysis 'Polly - Generate an AST of the SCoP (isl)'for => return' in function 'func': |
| ; CHECK: // Loop with Metadata |
| ; CHECK-NEXT: for (int c0 = 0; c0 < n; c0 += 4) { |
| |
| |
| ; CODEGEN: br i1 %polly.loop_cond, label %polly.loop_header, label %polly.exiting, !llvm.loop ![[LOOPID:[0-9]+]] |
| ; CODEGEN: ![[LOOPID]] = distinct !{![[LOOPID]], ![[LOOPNAME:[0-9]+]]} |
| ; CODEGEN: ![[LOOPNAME]] = !{!"llvm.loop.id", !"This-is-the-unrolled-loop"} |