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cdf50f8461
We tend to assume that the AA pipeline is by default the default AA pipeline and it's confusing when it's empty instead. PR48779 Initially reverted due to BasicAA running analyses in an unspecified order (multiple function calls as parameters), fixed by fetching analyses before the call to construct BasicAA. Reviewed By: asbirlea Differential Revision: https://reviews.llvm.org/D95117
58 lines
923 B
LLVM
58 lines
923 B
LLVM
; RUN: opt -passes="default<O1>" %s -S | FileCheck %s
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; REQUIRES: asserts
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declare void @bar()
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declare void @baz(i32*)
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; CHECK-LABEL: @foo1()
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define void @foo1() {
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entry:
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%tag = alloca i32, align 4
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call void @baz(i32* %tag)
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%tmp = load i32, i32* %tag, align 4
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switch i32 %tmp, label %sw.bb799 [
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i32 10, label %sw.bb239
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]
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sw.bb239:
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call void @foo2()
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br label %cleanup871
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sw.bb799:
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call void @foo3(i32 undef)
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br label %cleanup871
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cleanup871:
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call void @bar()
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unreachable
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}
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define void @foo2() {
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call void @foo4()
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unreachable
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}
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define void @foo3(i32 %ptr) {
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call void @foo1()
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unreachable
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}
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define void @foo4() {
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entry:
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%tag = alloca i32, align 4
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call void @baz(i32* %tag)
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%tmp = load i32, i32* %tag, align 4
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switch i32 %tmp, label %sw.bb442 [
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i32 16, label %sw.bb352
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]
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sw.bb352:
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call void @foo3(i32 undef)
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unreachable
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sw.bb442:
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call void @foo2()
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unreachable
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}
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