90a6bb30fa
It is possible that the remangled name for an intrinsic already exists with a different (and wrong) prototype within the module. As the bitcode reader keeps both versions of all remangled intrinsics around for a longer time, this can result in a crash, as can be seen in https://bugs.llvm.org/show_bug.cgi?id=50923 This patch makes 'remangleIntrinsicFunction' aware of this situation. When it is detected, it moves the version with the wrong prototype to a different name. That version will be removed anyway once the module is completely loaded. With thanks to @asbirlea for reporting this issue when trying out an lto build with the full restrict patches, and @efriedma for suggesting a sane resolution mechanism. Reviewed By: apilipenko Differential Revision: https://reviews.llvm.org/D105118
28 lines
1.1 KiB
LLVM
28 lines
1.1 KiB
LLVM
# RUN: llvm-as %S/Inputs/remangle1.ll -o %t.remangle1.bc
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# RUN: llvm-as %S/Inputs/remangle2.ll -o %t.remangle2.bc
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# RUN: llvm-link %t.remangle1.bc %t.remangle2.bc -o %t.remangle.linked.bc
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# RUN: llvm-dis %t.remangle.linked.bc -o - | FileCheck %s
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; CHECK-DAG: %fum.1 = type { %aab.0, i8, [7 x i8] }
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; CHECK-DAG: %aab.0 = type { %aba }
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; CHECK-DAG: %aba = type { [8 x i8] }
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; CHECK-DAG: %fum.1.2 = type { %abb, i8, [7 x i8] }
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; CHECK-DAG: %abb = type { %abc }
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; CHECK-DAG: %abc = type { [4 x i8] }
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; CHECK-LABEL: define void @foo1(%fum.1** %a, %fum.1.2** %b) {
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; CHECK-NEXT: %b.copy = call %fum.1.2** @llvm.ssa.copy.p0p0s_fum.1.2s(%fum.1.2** %b)
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; CHECK-NEXT: %a.copy = call %fum.1** @llvm.ssa.copy.p0p0s_fum.1s(%fum.1** %a)
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; CHECK-NEXT: ret void
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; CHECK: declare %fum.1.2** @llvm.ssa.copy.p0p0s_fum.1.2s(%fum.1.2** returned)
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; CHECK: declare %fum.1** @llvm.ssa.copy.p0p0s_fum.1s(%fum.1** returned)
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; CHECK-LABEL: define void @foo2(%fum.1.2** %b, %fum.1** %a) {
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; CHECK-NEXT: %a.copy = call %fum.1** @llvm.ssa.copy.p0p0s_fum.1s(%fum.1** %a)
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; CHECK-NEXT: %b.copy = call %fum.1.2** @llvm.ssa.copy.p0p0s_fum.1.2s(%fum.1.2** %b)
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; CHECK-NEXT: ret void
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