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Begin an Intel-specific instruction group.

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Add instructions representing Intel's division instructions which use a
numerator that is twice as wide as the denominator and produce both the
quotient and remainder.

Add encodings for the x86_[su]divmodx instructions.
This commit is contained in:
Jakob Stoklund Olesen
2017-07-18 10:09:02 -07:00
parent 02fd83cd5c
commit 306ef2095b
8 changed files with 132 additions and 6 deletions
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13
filetests/isa/intel/binary32.cton
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@@ -112,6 +112,19 @@ ebb0:
; asm: imull %ecx, %esi
[-,%rsi] v51 = imul v2, v1 ; bin: 0f af f1
; asm: movl $1, %eax
[-,%rax] v52 = iconst.i32 1 ; bin: b8 00000001
; asm: movl $2, %edx
[-,%rdx] v53 = iconst.i32 2 ; bin: ba 00000002
; asm: idivl %ecx
[-,%rax,%rdx] v54, v55 = x86_sdivmodx v52, v53, v1 ; bin: f7 f9
; asm: idivl %esi
[-,%rax,%rdx] v56, v57 = x86_sdivmodx v52, v53, v2 ; bin: f7 fe
; asm: divl %ecx
[-,%rax,%rdx] v58, v59 = x86_udivmodx v52, v53, v1 ; bin: f7 f1
; asm: divl %esi
[-,%rax,%rdx] v60, v61 = x86_udivmodx v52, v53, v2 ; bin: f7 f6
; Register copies.
; asm: movl %esi, %ecx