https://llvm.org/bugs/show_bug.cgi?id=27327
Bug ID: 27327
Summary: Arguments converted to WASM .S incorrectly by LLC
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: Backend: WebAssembly
Assignee: unassignedbugs at nondot.org
Reporter: gareth_morgan77 at hotmail.com
CC: llvm-bugs at lists.llvm.org
Classification: Unclassified
Created attachment 16207
--> https://llvm.org/bugs/attachment.cgi?id=16207&action=edit
The input LL and output S
The attached .LL file will be incorrectly converted to .s by WASM back end.
Specifically on line 3566
%call16 = call zeroext i1
@_ZN22MarchingSquaresFunctorI4Vec414MSVec4AccessorE3RunERKiS4_(%class.MarchingSquaresFunctor*
nonnull %f, i32* nonnull dereferenceable(4) %i, i32* nonnull dereferenceable(4)
%j)
This gets converted to this code in the .s. Where the constants 4 and 8 are
passed in as addresses. These should be __stackPointer+4 and __stackPointer+8:
i32.const $18=, 4
i32.add $18=, $18, $18
i32.const $19=, 8
i32.add $19=, $18, $19
i32.call $discard=,
_ZN22MarchingSquaresFunctorI4Vec414MSVec4AccessorE3RunERKiS4_ at FUNCTION, $1,
$18, $19
Compiled with following command line:
LLC Ashara.opt.ll -o Ashara.s -mtriple="wasm32-unknown-unknown"
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