f0265ccb60
Ensure that frontends can request both `PragmaEnable` and `PragmaFull` semantics on a loop. FYI: to the best of my knowledge, it's not possible to toggle both `PragmaEnable` and `PragmaFull` via `clang`.
81 lines
2.6 KiB
LLVM
81 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes=loop-unroll -S < %s | FileCheck %s
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define void @full_and_enable(ptr %p, i32 %n) {
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; CHECK-LABEL: define void @full_and_enable(
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; CHECK-SAME: ptr [[P:%.*]], i32 [[N:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[MASK:%.*]] = and i32 [[N]], 1
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; CHECK-NEXT: [[BOUND:%.*]] = add nuw i32 [[MASK]], 1
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: store i32 0, ptr [[P]], align 4
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 1, [[BOUND]]
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; CHECK-NEXT: br i1 [[CMP]], label %[[LOOP_1:.*]], label %[[EXIT:.*]]
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; CHECK: [[LOOP_1]]:
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; CHECK-NEXT: [[PTR_1:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 1
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; CHECK-NEXT: store i32 0, ptr [[PTR_1]], align 4
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; CHECK-NEXT: br label %[[EXIT]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret void
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;
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entry:
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%mask = and i32 %n, 1
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%bound = add nuw i32 %mask, 1
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
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%ptr = getelementptr inbounds i32, ptr %p, i32 %iv
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store i32 0, ptr %ptr, align 4
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%iv.next = add nuw i32 %iv, 1
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%cmp = icmp ult i32 %iv.next, %bound
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br i1 %cmp, label %loop, label %exit, !llvm.loop !0
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exit:
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ret void
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}
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define void @full_only(ptr %p, i32 %n) {
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; CHECK-LABEL: define void @full_only(
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; CHECK-SAME: ptr [[P:%.*]], i32 [[N:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: [[MASK:%.*]] = and i32 [[N]], 1
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; CHECK-NEXT: [[BOUND:%.*]] = add nuw i32 [[MASK]], 1
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; CHECK-NEXT: br label %[[LOOP:.*]]
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; CHECK: [[LOOP]]:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
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; CHECK-NEXT: [[PTR:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 [[IV]]
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; CHECK-NEXT: store i32 0, ptr [[PTR]], align 4
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; CHECK-NEXT: [[IV_NEXT]] = add nuw i32 [[IV]], 1
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[IV_NEXT]], [[BOUND]]
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; CHECK-NEXT: br i1 [[CMP]], label %[[LOOP]], label %[[EXIT:.*]], !llvm.loop [[LOOP0:![0-9]+]]
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; CHECK: [[EXIT]]:
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; CHECK-NEXT: ret void
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;
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entry:
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%mask = and i32 %n, 1
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%bound = add nuw i32 %mask, 1
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
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%ptr = getelementptr inbounds i32, ptr %p, i32 %iv
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store i32 0, ptr %ptr, align 4
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%iv.next = add nuw i32 %iv, 1
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%cmp = icmp ult i32 %iv.next, %bound
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br i1 %cmp, label %loop, label %exit, !llvm.loop !1
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exit:
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ret void
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}
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!0 = distinct !{!0, !2, !3}
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!1 = distinct !{!1, !2}
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!2 = !{!"llvm.loop.unroll.full"}
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!3 = !{!"llvm.loop.unroll.enable"}
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;.
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; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]]}
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; CHECK: [[META1]] = !{!"llvm.loop.unroll.full"}
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;.
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