378f4e5ec2
This fixes PR49043 by invalidating the handle on RAUW. This will work fine assuming all existing RAUW users add the new assumption to the cache. That means, if a new llvm.assume call replaces an old one, you need to add the new one now as a RAUW is not enough anymore. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D96208
33 lines
818 B
LLVM
33 lines
818 B
LLVM
; RUN: opt < %s -S -passes="print<assumptions>,gvn-sink,loop-unroll" -unroll-count=3 | FileCheck %s
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;
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; This crashed because the cached assumption was replaced and the replacement
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; was then in the cache twice.
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;
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; PR49043
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@g = external global i32
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define void @main() {
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bb:
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%i1.i = load volatile i32, i32* @g
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%i32.i = icmp eq i32 %i1.i, 0
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call void @llvm.assume(i1 %i32.i) #3
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br label %bb4.i
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bb4.i: ; preds = %bb4.i, %bb
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%i.i = load volatile i32, i32* @g
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%i3.i = icmp eq i32 %i.i, 0
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call void @llvm.assume(i1 %i3.i) #3
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br label %bb4.i
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func_1.exit: ; No predecessors!
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unreachable
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}
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declare void @llvm.assume(i1)
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; CHECK: call void @llvm.assume(
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; CHECK: call void @llvm.assume(
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; CHECK: call void @llvm.assume(
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