14120227a3
For the purpose of verifying proper arguments extensions per the target's ABI, introduce the NoExt attribute that may be used by a target when neither sign- or zeroextension is required (e.g. with a struct in register). The purpose of doing so is to be able to verify that there is always one of these attributes present and by this detecting cases where sign/zero extension is actually missing. As a first step, this patch has the verification step done for the SystemZ backend only, but left off by default until all known issues have been addressed. Other targets/front-ends can now also add NoExt attribute where needed and do this check in the backend.
15 lines
370 B
LLVM
15 lines
370 B
LLVM
; RUN: not --crash llc < %s -mtriple=s390x-linux-gnu -argext-abi-check 2>&1 \
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; RUN: | FileCheck %s
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; REQUIRES: asserts
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;
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; Test detection of missing extension of an outgoing i16 call argument.
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define void @caller() {
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call void @bar_Struct(i16 123)
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ret void
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}
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declare void @bar_Struct(i16 %Arg)
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; CHECK: Narrow integer argument must have a valid extension type
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