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| author | Pepijn de Vos <pepijndevos@gmail.com> | 2019-08-01 19:07:53 +0200 |
|---|---|---|
| committer | tgingold <tgingold@users.noreply.github.com> | 2019-08-01 19:07:53 +0200 |
| commit | 9b64728925b49051e6ae489ae005c0f22df0110e (patch) | |
| tree | 41bcb027ac5757e8c501fb8ce8892972d24bf463 /src/synth/synth-expr.adb | |
| parent | ae6d2b79e508684f189b6d8cc093dbb6f586f767 (diff) | |
| download | ghdl-9b64728925b49051e6ae489ae005c0f22df0110e.tar.gz ghdl-9b64728925b49051e6ae489ae005c0f22df0110e.tar.bz2 ghdl-9b64728925b49051e6ae489ae005c0f22df0110e.zip | |
synth: handle signed integer comparisons (#878)
* comparisons with integer literals
* display signed comparison nicely
* revert literal size changes
* properly display signed values
Diffstat (limited to 'src/synth/synth-expr.adb')
| -rw-r--r-- | src/synth/synth-expr.adb | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/synth/synth-expr.adb b/src/synth/synth-expr.adb index 67121652f..f7cbe074b 100644 --- a/src/synth/synth-expr.adb +++ b/src/synth/synth-expr.adb @@ -1048,6 +1048,27 @@ package body Synth.Expr is else return Synth_Compare (Id_Sle); end if; + when Iir_Predefined_Integer_Less => + if Is_Const (Left) and then Is_Const (Right) then + return Create_Value_Discrete + (Boolean'Pos (Left.Scal < Right.Scal), Boolean_Type); + else + return Synth_Compare (Id_Slt); + end if; + when Iir_Predefined_Integer_Greater_Equal => + if Is_Const (Left) and then Is_Const (Right) then + return Create_Value_Discrete + (Boolean'Pos (Left.Scal >= Right.Scal), Boolean_Type); + else + return Synth_Compare (Id_Sge); + end if; + when Iir_Predefined_Integer_Greater => + if Is_Const (Left) and then Is_Const (Right) then + return Create_Value_Discrete + (Boolean'Pos (Left.Scal > Right.Scal), Boolean_Type); + else + return Synth_Compare (Id_Sgt); + end if; when Iir_Predefined_Integer_Equality => if Is_Const (Left) and then Is_Const (Right) then return Create_Value_Discrete |