b7d870eae7
PR49043 exposed a problem when it comes to RAUW llvm.assumes. While D96106 would fix it for GVNSink, it seems a more general concern. To avoid future problems this patch moves away from the vector of weak reference model used in the assumption cache. Instead, we track the llvm.assume calls with a callback handle which will remove itself from the cache if the call is deleted. Fixes PR49043. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D96168
23 lines
582 B
LLVM
23 lines
582 B
LLVM
; RUN: opt < %s -disable-output -passes='print<assumptions>' 2>&1 | FileCheck %s
|
|
|
|
target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
|
|
|
|
declare void @llvm.assume(i1)
|
|
|
|
define void @test1(i32 %a) {
|
|
; CHECK-LABEL: Cached assumptions for function: test1
|
|
; CHECK-DAG: icmp ne i32 %{{.*}}, 0
|
|
; CHECK-DAG: icmp slt i32 %{{.*}}, 0
|
|
; CHECK-DAG: icmp sgt i32 %{{.*}}, 0
|
|
|
|
entry:
|
|
%cond1 = icmp ne i32 %a, 0
|
|
call void @llvm.assume(i1 %cond1)
|
|
%cond2 = icmp slt i32 %a, 0
|
|
call void @llvm.assume(i1 %cond2)
|
|
%cond3 = icmp sgt i32 %a, 0
|
|
call void @llvm.assume(i1 %cond3)
|
|
|
|
ret void
|
|
}
|