77 lines
2.7 KiB
LLVM
77 lines
2.7 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals --version 2
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; RUN: opt -S -passes=licm < %s| FileCheck %s
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declare void @foo(...) memory(none)
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; We can preserve all metadata on instructions that are guaranteed to execute.
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define void @test_unconditional(i1 %c, ptr dereferenceable(8) align 8 %p) {
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; CHECK-LABEL: define void @test_unconditional
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; CHECK-SAME: (i1 [[C:%.*]], ptr align 8 dereferenceable(8) [[P:%.*]]) {
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; CHECK-NEXT: [[V1:%.*]] = load i32, ptr [[P]], align 4, !range [[RNG0:![0-9]+]]
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; CHECK-NEXT: [[V2:%.*]] = load ptr, ptr [[P]], align 8, !nonnull !1, !noundef !1
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; CHECK-NEXT: [[V3:%.*]] = load ptr, ptr [[P]], align 8, !dereferenceable !2, !align !2
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: call void @foo(i32 [[V1]], ptr [[V2]], ptr [[V3]])
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; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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br label %loop
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loop:
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%v1 = load i32, ptr %p, !range !{i32 0, i32 10}
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%v2 = load ptr, ptr %p, !nonnull !{}, !noundef !{}
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%v3 = load ptr, ptr %p, !align !{i64 4}, !dereferenceable !{i64 4}
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call void @foo(i32 %v1, ptr %v2, ptr %v3)
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br i1 %c, label %loop, label %exit
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exit:
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ret void
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}
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; We cannot preserve UB-implying metadata on instructions that are speculated.
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; However, we can preserve poison-implying metadata.
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define void @test_conditional(i1 %c, i1 %c2, ptr dereferenceable(8) align 8 %p) {
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; CHECK-LABEL: define void @test_conditional
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; CHECK-SAME: (i1 [[C:%.*]], i1 [[C2:%.*]], ptr align 8 dereferenceable(8) [[P:%.*]]) {
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; CHECK-NEXT: [[V1:%.*]] = load i32, ptr [[P]], align 4, !range [[RNG0]]
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; CHECK-NEXT: [[V2:%.*]] = load ptr, ptr [[P]], align 8, !nonnull !1
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; CHECK-NEXT: [[V3:%.*]] = load ptr, ptr [[P]], align 8, !align !2
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: br i1 [[C]], label [[IF:%.*]], label [[LATCH:%.*]]
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; CHECK: if:
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; CHECK-NEXT: call void @foo(i32 [[V1]], ptr [[V2]], ptr [[V3]])
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; CHECK-NEXT: br label [[LATCH]]
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; CHECK: latch:
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; CHECK-NEXT: br i1 [[C2]], label [[LOOP]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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br label %loop
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loop:
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br i1 %c, label %if, label %latch
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if:
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%v1 = load i32, ptr %p, !range !{i32 0, i32 10}
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%v2 = load ptr, ptr %p, !nonnull !{}, !noundef !{}
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%v3 = load ptr, ptr %p, !align !{i64 4}, !dereferenceable !{i64 4}
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call void @foo(i32 %v1, ptr %v2, ptr %v3)
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br label %latch
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latch:
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br i1 %c2, label %loop, label %exit
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exit:
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ret void
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}
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;.
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; CHECK: attributes #[[ATTR0:[0-9]+]] = { memory(none) }
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;.
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; CHECK: [[RNG0]] = !{i32 0, i32 10}
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; CHECK: [[META1:![0-9]+]] = !{}
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; CHECK: [[META2:![0-9]+]] = !{i64 4}
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;.
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