102 lines
3.3 KiB
LLVM
102 lines
3.3 KiB
LLVM
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; RUN: opt -disable-output -loop-simplify -licm -enable-new-pm=0 -print-memoryssa -enable-mssa-loop-dependency=true < %s 2>&1 | FileCheck %s
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; RUN: opt -disable-output -aa-pipeline=basic-aa -passes='loop-mssa(licm),print<memoryssa>' < %s 2>&1 | FileCheck %s
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK-LABEL: @main()
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; CHECK: 5 = MemoryPhi(
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; CHECK-NOT: 7 = MemoryPhi(
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@v_67 = external dso_local global i32, align 1
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@v_76 = external dso_local global i16, align 1
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@v_86 = external dso_local global i16 *, align 1
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define dso_local void @main() {
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entry:
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%v_59 = alloca i16, align 2
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br label %for.cond
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for.cond: ; preds = %for.body, %entry
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br i1 undef, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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store i16 undef, i16* %v_59, align 2
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br label %for.cond
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for.end: ; preds = %for.cond
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br i1 undef, label %if.else568, label %cond.end82
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cond.false69: ; No predecessors!
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br label %cond.end82
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cond.end82: ; preds = %cond.false69, %cond.true55
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br i1 undef, label %if.else568, label %land.lhs.true87
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land.lhs.true87: ; preds = %cond.end82
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br i1 undef, label %if.then88, label %if.else568
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if.then88: ; preds = %land.lhs.true87
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store i16 * @v_76, i16 ** @v_86, align 1
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br label %if.end569
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if.else568: ; preds = %land.lhs.true87, %cond.end82, %for.end
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store volatile i32 undef, i32 * @v_67, align 1
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br label %if.end569
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if.end569: ; preds = %if.else568, %if.then88
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ret void
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}
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; CHECK-LABEL: @f()
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; CHECK: 7 = MemoryPhi(
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; CHECK: 6 = MemoryPhi(
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; CHECK: 10 = MemoryPhi(
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; CHECK: 9 = MemoryPhi(
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; CHECK: 8 = MemoryPhi(
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define void @f() {
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entry:
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%e = alloca i16, align 1
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br label %lbl1
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lbl1: ; preds = %if.else, %for.end5, %entry
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store i16 undef, i16* %e, align 1
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%0 = load i16, i16* %e, align 1
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%call = call i16 @g(i16 %0)
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br i1 undef, label %for.end, label %if.else
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for.end: ; preds = %if.then
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br i1 true, label %for.cond2, label %lbl2
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lbl2: ; preds = %for.body4, %if.end
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br label %for.cond2
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for.cond2: ; preds = %lbl3
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br i1 undef, label %for.body4, label %for.end5
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for.body4: ; preds = %for.cond2
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br label %lbl2
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for.end5: ; preds = %for.cond2
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switch i32 undef, label %unreachable [
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i32 0, label %if.end12
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i32 2, label %lbl1
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]
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if.else: ; preds = %lbl1
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switch i32 undef, label %unreachable [
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i32 0, label %if.end12
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i32 2, label %lbl1
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]
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if.end12: ; preds = %cleanup.cont11s, %cleanup.cont
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call void @llvm.lifetime.end.p0i8(i64 1, i8* undef)
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ret void
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unreachable: ; preds = %if.else, %for.end5
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unreachable
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}
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declare i16 @g(i16)
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; Function Attrs: argmemonly nounwind willreturn
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declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
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