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option to disable bounds checking; examples/path_tracing.v: optimizations

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This commit is contained in:
Delyan Angelov
2020-02-16 17:13:45 +02:00
committed by GitHub
parent 277c55fe5b
commit 195f3f465b
9 changed files with 370 additions and 315 deletions
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19
vlib/compiler/cheaders.v
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@ -140,6 +140,25 @@ $c_common_macros
#define DEFAULT_LE(a, b) (a <= b)
#define DEFAULT_GT(a, b) (a > b)
#define DEFAULT_GE(a, b) (a >= b)
// NB: macro_fXX_eq and macro_fXX_ne are NOT used
// in the generated C code. They are here just for
// completeness/testing.
#define macro_f64_eq(a, b) (a == b)
#define macro_f64_ne(a, b) (a != b)
#define macro_f64_lt(a, b) (a < b)
#define macro_f64_le(a, b) (a <= b)
#define macro_f64_gt(a, b) (a > b)
#define macro_f64_ge(a, b) (a >= b)
#define macro_f32_eq(a, b) (a == b)
#define macro_f32_ne(a, b) (a != b)
#define macro_f32_lt(a, b) (a < b)
#define macro_f32_le(a, b) (a <= b)
#define macro_f32_gt(a, b) (a > b)
#define macro_f32_ge(a, b) (a >= b)
//================================== GLOBALS =================================*/
byte g_str_buf[1024];
int load_so(byteptr);

12
vlib/compiler/expression.v
View File

@ -217,6 +217,10 @@ fn (p mut Parser) bterm() string {
if is_float && p.cur_fn.name != 'f32_abs' && p.cur_fn.name != 'f64_abs' {
p.gen(')')
match tok {
// NB: For more precision/stability, the == and != float
// comparisons are done with V functions that use the epsilon
// constants for the given type.
// Everything else uses native comparisons (C macros) for speed.
.eq {
p.cgen.set_placeholder(ph, '${expr_type}_eq(')
}
@ -224,16 +228,16 @@ fn (p mut Parser) bterm() string {
p.cgen.set_placeholder(ph, '${expr_type}_ne(')
}
.le {
p.cgen.set_placeholder(ph, '${expr_type}_le(')
p.cgen.set_placeholder(ph, 'macro_${expr_type}_le(')
}
.ge {
p.cgen.set_placeholder(ph, '${expr_type}_ge(')
p.cgen.set_placeholder(ph, 'macro_${expr_type}_ge(')
}
.gt {
p.cgen.set_placeholder(ph, '${expr_type}_gt(')
p.cgen.set_placeholder(ph, 'macro_${expr_type}_gt(')
}
.lt {
p.cgen.set_placeholder(ph, '${expr_type}_lt(')
p.cgen.set_placeholder(ph, 'macro_${expr_type}_lt(')
}
else {
}}