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| author | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2017-04-02 16:42:29 +0200 |
|---|---|---|
| committer | Luc Van Oostenryck <luc.vanoostenryck@gmail.com> | 2017-11-11 14:16:35 +0100 |
| commit | f531c014b21523d475373a4dd0b5b60546b03527 (patch) | |
| tree | 4ab7dd7aeb300f1d5a27ba0bc7d987b114ccde98 /validation | |
| parent | 90859bb4e3f9ad11f76ad42e3dce84043bdc3176 (diff) | |
| download | sparse-dev-f531c014b21523d475373a4dd0b5b60546b03527.tar.gz | |
fix 'simplification' of float-to-int casts
Currently, simplify_cast() don't really take floating-points
in account and happily simplify away a float-to-int cast
if both types have the same size.
Fix this by not touching such casts.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Diffstat (limited to 'validation')
| -rw-r--r-- | validation/cast-kinds.c | 12 | ||||
| -rw-r--r-- | validation/fp2i-cast.c | 30 |
2 files changed, 38 insertions, 4 deletions
diff --git a/validation/cast-kinds.c b/validation/cast-kinds.c index 697f9735..e686c01e 100644 --- a/validation/cast-kinds.c +++ b/validation/cast-kinds.c @@ -92,7 +92,8 @@ iptr_2_int: float_2_int: .L10: <entry-point> - ret.32 %arg1 + cast.32 %r17 <- (32) %arg1 + ret.32 %r17 double_2_int: @@ -139,7 +140,8 @@ iptr_2_uint: float_2_uint: .L24: <entry-point> - ret.32 %arg1 + cast.32 %r38 <- (32) %arg1 + ret.32 %r38 double_2_uint: @@ -193,7 +195,8 @@ float_2_long: double_2_long: .L40: <entry-point> - ret.64 %arg1 + cast.64 %r62 <- (64) %arg1 + ret.64 %r62 int_2_ulong: @@ -240,7 +243,8 @@ float_2_ulong: double_2_ulong: .L54: <entry-point> - ret.64 %arg1 + cast.64 %r83 <- (64) %arg1 + ret.64 %r83 int_2_vptr: diff --git a/validation/fp2i-cast.c b/validation/fp2i-cast.c new file mode 100644 index 00000000..08f8c925 --- /dev/null +++ b/validation/fp2i-cast.c @@ -0,0 +1,30 @@ +#if __SIZEOF_INT__ == __SIZEOF_FLOAT__ +typedef signed int si; +typedef unsigned int ui; +#else +#error "no float-sized integer type" +#endif + +#if __SIZEOF_LONG_LONG__ == __SIZEOF_DOUBLE__ +typedef signed long long sl; +typedef unsigned long long ul; +#else +#error "no double-sized integer type" +#endif + +si f2si(float a) { return a; } +ui f2ui(float a) { return a; } +sl f2sl(float a) { return a; } +ul f2ul(float a) { return a; } +si d2si(double a) { return a; } +ui d2ui(double a) { return a; } +sl d2sl(double a) { return a; } +ul d2ul(double a) { return a; } + +/* + * check-name: fp2i cast + * check-command: test-linearize -Wno-decl $file + * + * check-output-ignore + * check-output-pattern-8-times: cast\\. + */ |