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a28e5f21d3
Summary: The issue happens with: %0 = ....., !tbaa !0 %1 = ....., !tbaa !1 With !0 that references !1. In this case when loading !0 we generates a temporary for the operand !1. We now flush it immediately and trigger the load of !1 before moving on. If we don't we get the temporary when attaching to %1. This is usually not an issue except that we eagerly try to update TBAA MDNodes, which is obviously not possible if we only have a temporary. Differential Revision: https://reviews.llvm.org/D28423 llvm-svn: 291362
39 lines
1.3 KiB
LLVM
39 lines
1.3 KiB
LLVM
; We generate invalid TBAA, hence -disable-verify, but this is a convenient way
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; to trigger a metadata lazyloading crash
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; RUN: opt -module-summary %s -o %t.bc -bitcode-mdindex-threshold=0 -disable-verify
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; RUN: opt -module-summary %p/Inputs/funcimport-tbaa.ll -o %t2.bc
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; RUN: llvm-lto -thinlto-action=thinlink -o %t3.bc %t.bc %t2.bc
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; RUN: llvm-lto -thinlto-action=import %t2.bc -thinlto-index=%t3.bc -o - \
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; RUN: | llvm-dis -o - | FileCheck %s --check-prefix=IMPORTGLOB1
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; IMPORTGLOB1: define available_externally float @globalfunc1
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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define float @globalfunc1(i32*, float*) {
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%3 = load i32, i32* %0, align 4, !tbaa !0
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%4 = sitofp i32 %3 to float
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%5 = load float, float* %1, align 4, !tbaa !4
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%6 = fadd float %4, %5
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ret float %6
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}
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; We need a second function for force the metadata to be emitted in the global block
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define float @globalfunc2(i32*, float*) {
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%3 = load i32, i32* %0, align 4, !tbaa !0
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%4 = sitofp i32 %3 to float
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%5 = load float, float* %1, align 4, !tbaa !4
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%6 = fadd float %4, %5
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ret float %6
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}
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!0 = !{!1, !4, i64 0}
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!1 = !{!"int", !2, i64 0}
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!2 = !{!"omnipotent char", !3, i64 0}
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!3 = !{!"Simple C/C++ TBAA"}
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!4 = !{!5, !5, i64 0}
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!5 = !{!"float", !2, i64 0}
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