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Add more legalization patterns for *_imm instructions.

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When the imediate value is out of range for the legal encodings, convert
these instructions to an iconst followed by their register counterparts.
This commit is contained in:
Jakob Stoklund Olesen
2018-02-20 10:47:46 -08:00
parent a6ab90f205
commit ad896d9790
2 changed files with 15 additions and 3 deletions
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3
cranelift/filetests/isa/intel/legalize-div-traps.cton
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@@ -44,7 +44,8 @@ ebb0(v0: i64, v1: i64):
; nextln: $(q=$V), $(r=$V) = x86_sdivmodx $v0, $hi, $v1
; nextln: jump $(done=$EBB)($q)
; check: $m1:
; nextln: $(fm=$V) = ifcmp_imm.i64 $v0, 0x8000_0000_0000_0000
; nextln: $(imin=$V) = iconst.i64 0x8000_0000_0000_0000
; nextln: $(fm=$V) = ifcmp.i64 $v0, $imin
; nextln: trapif eq $fm, int_ovf
; check: $done($v2: i64):
return v2