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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2016-10-02 16:17:51 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2016-10-02 16:17:51 +0200 |
| commit | f21a6b181dded86ef0e5c7ab94f74e5b960fd510 (patch) | |
| tree | 01bb7b59e438c60d12d87d869b6c890095a977f4 /backend/Selection.v | |
| parent | a14b9578ee5297d954103e05d7b2d322816ddd8f (diff) | |
| download | compcert-kvx-f21a6b181dded86ef0e5c7ab94f74e5b960fd510.tar.gz compcert-kvx-f21a6b181dded86ef0e5c7ab94f74e5b960fd510.zip | |
Improve code generation for 64-bit signed integer division
Implement the 'shift right extended' trick, both in the generic implementation (backend/SplitLong) and in the IA32 port.
Note that now SelectDiv depends on SelectLong, and that some work was moved from SelectLong to SelectDiv.
Diffstat (limited to 'backend/Selection.v')
| -rw-r--r-- | backend/Selection.v | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/backend/Selection.v b/backend/Selection.v index 3aff446e..5cb5d119 100644 --- a/backend/Selection.v +++ b/backend/Selection.v @@ -27,7 +27,7 @@ Require Import Coqlib Maps. Require Import AST Errors Integers Globalenvs Switch. Require Cminor. Require Import Op CminorSel. -Require Import SelectOp SelectDiv SplitLong SelectLong. +Require Import SelectOp SplitLong SelectLong SelectDiv. Require Machregs. Local Open Scope cminorsel_scope. @@ -138,9 +138,9 @@ Definition sel_binop (op: Cminor.binary_operation) (arg1 arg2: expr) : expr := | Cminor.Oaddl => addl arg1 arg2 | Cminor.Osubl => subl arg1 arg2 | Cminor.Omull => mull arg1 arg2 - | Cminor.Odivl => divl arg1 arg2 + | Cminor.Odivl => divls arg1 arg2 | Cminor.Odivlu => divlu arg1 arg2 - | Cminor.Omodl => modl arg1 arg2 + | Cminor.Omodl => modls arg1 arg2 | Cminor.Omodlu => modlu arg1 arg2 | Cminor.Oandl => andl arg1 arg2 | Cminor.Oorl => orl arg1 arg2 |