297 lines
6.7 KiB
LLVM
297 lines
6.7 KiB
LLVM
; RUN: opt -S -passes=licm %s | FileCheck %s
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; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop-mssa(licm)' < %s -S | FileCheck %s
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declare i32 @load(ptr %p) argmemonly readonly nounwind
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define void @test_load(ptr noalias %loc, ptr noalias %sink) {
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; CHECK-LABEL: @test_load
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; CHECK-LABEL: entry:
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; CHECK: call i32 @load
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; CHECK-LABEL: loop:
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entry:
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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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%ret = call i32 @load(ptr %loc)
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store volatile i32 %ret, ptr %sink
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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declare i32 @spec(ptr %p, ptr %q) readonly argmemonly nounwind speculatable
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; We should strip the dereferenceable callsite attribute on spec call's argument since it is
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; can cause UB in the speculatable call when hoisted to preheader.
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; However, we need not strip the nonnull attribute since it just propagates
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; poison if the parameter was indeed null.
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define void @test_strip_attribute(ptr noalias %loc, ptr noalias %sink, ptr %q) {
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; CHECK-LABEL: @test_strip_attribute(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[RET:%.*]] = call i32 @load(ptr [[LOC:%.*]])
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; CHECK-NEXT: [[NULLCHK:%.*]] = icmp eq ptr [[Q:%.*]], null
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; CHECK-NEXT: [[RET2:%.*]] = call i32 @spec(ptr nonnull [[Q]], ptr [[LOC]])
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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:%.*]], [[ISNULL:%.*]] ]
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; CHECK-NEXT: br i1 [[NULLCHK]], label [[ISNULL]], label [[NONNULLBB:%.*]]
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entry:
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br label %loop
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loop:
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%iv = phi i32 [0, %entry], [%iv.next, %isnull ]
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%ret = call i32 @load(ptr %loc)
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%nullchk = icmp eq ptr %q, null
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br i1 %nullchk, label %isnull, label %nonnullbb
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nonnullbb:
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%ret2 = call i32 @spec(ptr nonnull %q, ptr dereferenceable(12) %loc)
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br label %isnull
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isnull:
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store volatile i32 %ret, ptr %sink
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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declare void @store(i32 %val, ptr %p) argmemonly writeonly nounwind
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define void @test(ptr %loc) {
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; CHECK-LABEL: @test
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: exit:
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entry:
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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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call void @store(i32 0, ptr %loc)
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @test_multiexit(ptr %loc, i1 %earlycnd) {
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; CHECK-LABEL: @test_multiexit
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: backedge:
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entry:
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br label %loop
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loop:
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%iv = phi i32 [0, %entry], [%iv.next, %backedge]
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call void @store(i32 0, ptr %loc)
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%iv.next = add i32 %iv, 1
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br i1 %earlycnd, label %exit1, label %backedge
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backedge:
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit2
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exit1:
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ret void
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exit2:
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ret void
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}
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define void @neg_lv_value(ptr %loc) {
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; CHECK-LABEL: @neg_lv_value
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: exit:
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entry:
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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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call void @store(i32 %iv, ptr %loc)
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @neg_lv_addr(ptr %loc) {
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; CHECK-LABEL: @neg_lv_addr
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: exit:
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entry:
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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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%p = getelementptr i32, ptr %loc, i32 %iv
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call void @store(i32 0, ptr %p)
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @neg_mod(ptr %loc) {
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; CHECK-LABEL: @neg_mod
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: exit:
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entry:
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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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call void @store(i32 0, ptr %loc)
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store i32 %iv, ptr %loc
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @neg_ref(ptr %loc) {
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; CHECK-LABEL: @neg_ref
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: exit1:
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entry:
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br label %loop
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loop:
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%iv = phi i32 [0, %entry], [%iv.next, %backedge]
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call void @store(i32 0, ptr %loc)
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%v = load i32, ptr %loc
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%earlycnd = icmp eq i32 %v, 198
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br i1 %earlycnd, label %exit1, label %backedge
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backedge:
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit2
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exit1:
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ret void
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exit2:
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ret void
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}
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declare void @modref()
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define void @neg_modref(ptr %loc) {
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; CHECK-LABEL: @neg_modref
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: exit:
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entry:
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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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call void @store(i32 0, ptr %loc)
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call void @modref()
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @neg_fence(ptr %loc) {
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; CHECK-LABEL: @neg_fence
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; CHECK-LABEL: loop:
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; CHECK: call void @store
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; CHECK-LABEL: exit:
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entry:
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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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call void @store(i32 0, ptr %loc)
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fence seq_cst
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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declare void @not_nounwind(i32 %v, ptr %p) writeonly argmemonly
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declare void @not_argmemonly(i32 %v, ptr %p) writeonly nounwind
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declare void @not_writeonly(i32 %v, ptr %p) argmemonly nounwind
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define void @neg_not_nounwind(ptr %loc) {
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; CHECK-LABEL: @neg_not_nounwind
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; CHECK-LABEL: loop:
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; CHECK: call void @not_nounwind
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; CHECK-LABEL: exit:
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entry:
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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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call void @not_nounwind(i32 0, ptr %loc)
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @neg_not_argmemonly(ptr %loc) {
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; CHECK-LABEL: @neg_not_argmemonly
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; CHECK-LABEL: loop:
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; CHECK: call void @not_argmemonly
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; CHECK-LABEL: exit:
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entry:
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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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call void @not_argmemonly(i32 0, ptr %loc)
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define void @neg_not_writeonly(ptr %loc) {
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; CHECK-LABEL: @neg_not_writeonly
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; CHECK-LABEL: loop:
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; CHECK: call void @not_writeonly
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; CHECK-LABEL: exit:
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entry:
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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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call void @not_writeonly(i32 0, ptr %loc)
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%iv.next = add i32 %iv, 1
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%cmp = icmp slt i32 %iv, 200
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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