dimgigov
eb8179b6d0
- QBE_IsTerminator(hBlock) checks ALL children, not just last - Removed legacy c_backend.bux and nim_backend.bux from _selfhost/src/ - QBE self-hosting QBE phase: PASSES (SSA valid, assembled to .s) - Remaining: linker errors from missing String_Eq/StringBuilder in runtime
33 lines
581 B
Plaintext
33 lines
581 B
Plaintext
# Ember Sawady reported this bug
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# in stack-slot coalescing
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type :t = { w 2 }
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function :t $func() {
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@start.0
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%temp =l alloc4 4
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%ret =l alloc4 8
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storew 1, %temp
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# storew can also go here
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%field =l add %ret, 4
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storew 2, %ret
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blit %temp, %field, 4
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# removing either of these storews causes it to work
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storew 2, %ret
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ret %ret
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}
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export function w $main() {
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@start
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%ret =:t call $func()
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%fptr =l add %ret, 4
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%field =w loaduw %fptr
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%x =w ceqw %field, 1
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jnz %x, @passed, @failed
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@failed
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# this fails despite 1 => temp => ret + 4 => field
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call $abort()
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@passed
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ret 0
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}
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