8815ce03e8
It breaks up the function pass manager in the codegen pipeline. With empty parameters, it looks at the -mllvm flag -rewrite-map-file. This is likely not in use. Add a check that we only have one function pass manager in the codegen pipeline. Some tests relied on the fact that we had a module pass somewhere in the codegen pipeline. addr-label.ll crashes on ARM due to this change. This is because a ARMConstantPoolConstant containing a BasicBlock to represent a blockaddress may hold an invalid pointer to a BasicBlock if the blockaddress is invalidated by its BasicBlock getting removed. In that case all referencing blockaddresses are RAUW a constant int. Making ARMConstantPoolConstant::CVal a WeakVH fixes the crash, but I'm not sure that's the right fix. As a workaround, create a barrier right before ISel so that IR optimizations can't happen while a ARMConstantPoolConstant has been created. Reviewed By: rnk, MaskRay, compnerd Differential Revision: https://reviews.llvm.org/D99707
17 lines
513 B
LLVM
17 lines
513 B
LLVM
; RUN: opt -mtriple=x86_64-unknown-unknown -codegenprepare -S < %s 2>&1 | FileCheck %s
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; Function Attrs: norecurse nounwind readnone uwtable
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define i32 @foo(i32, i32, i32) {
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%4 = and i32 %0, 3
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%5 = icmp eq i32 %4, 1
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%6 = select i1 %5, i32 %1, i32 %2, !prof !1
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; CHECK: br {{.*}}label{{.*}}, label{{.*}}, !prof ![[WT:.*]]
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ret i32 %6
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}
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!llvm.ident = !{!0}
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!0 = !{!"clang version 4.0.0 (trunk 279683)"}
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!1 = !{!"branch_weights", i32 1000, i32 1 }
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; CHECK: ![[WT]] = !{!"branch_weights", i32 1000, i32 1}
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