| Issue |
146213
|
| Summary |
[llvm] [M68k] CallSeq assertion failure in SelectionDAG
|
| Labels |
bug,
backend:m68k,
llvm
|
| Assignees |
|
| Reporter |
knickish
|
```ll
; RUN: llc < %s -mtriple=m68k-linux | FileCheck %s
define double @minimized() {
start:
%_58 = call double null(double 0.000000e+00)
%_60 = load double, ptr null, align 8
%_57 = fmul double 0.000000e+00, %_60
store double %_57, ptr null, align 8
ret double 0.000000e+00
}
```
fails with `.../bin/FileCheck .../llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp:510: llvm::SDNode* FindCallSeqStart(llvm::SDNode*, unsigned int&, unsigned int&, const llvm::TargetInstrInfo*): Assertion 'Best' failed.`
Something appears to be wrong with the `callseq_start/end` ordering with these instructions, but not yet sure what the exact problem is
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