summaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.misc-tests/dectest.exp
blob: 7027551da66d4c707fa0792e68165555fd4cc91c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
# Copyright (C) 2005-2013 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

# DejaGnu test driver around Mike Cowlishaw's testsuite for decimal
# decimal arithmetic ("decTest").  See:
#    <http://www2.hursley.ibm.com/decimal/dectest.html>.
#
# Contributed by Ben Elliston <bje@au.ibm.com>.

set DEC_TORTURE_OPTIONS [list {} -O1 -O2 -O3 -Os -msoft-float]

proc target-specific-flags {} {
  set result "-frounding-math "
  return $result
}
  
# Load support procs (borrow these from c-torture).
load_lib c-torture.exp
load_lib target-supports.exp
load_lib torture-options.exp

# Skip these tests for targets that don't support this extension.
if { ![check_effective_target_dfp] } {
    return
}

# The list format is [coefficient, max-exponent, min-exponent].
set properties(_Decimal32) [list 7 96 -95]
set properties(_Decimal64) [list 16 384 -383]
set properties(_Decimal128) [list 34 6144 -6143]

# Operations implemented by the compiler.
set operators(add) {+}
set operators(compare) {==}
set operators(divide) {/}
set operators(multiply) {*}
set operators(subtract) {-}
set operators(minus) {-}
set operators(plus) {+}
set operators(apply) {}

# Operations imlemented by the library.
set libfuncs(abs) fabsl
set libfuncs(squareroot) sqrtl
set libfuncs(max) fmaxl
set libfuncs(min) fminl
set libfuncs(quantize) quantize
set libfuncs(samequantum) samequantum
set libfuncs(power) powl
set libfuncs(toSci) unknown
set libfuncs(tosci) unknown
set libfuncs(toEng) unknown
set libfuncs(toeng) unknown
set libfuncs(divideint) unknown
set libfuncs(rescale) unknown
set libfuncs(remainder) unknown
set libfuncs(remaindernear) unknown
set libfuncs(normalize) unknown
set libfuncs(tointegral) unknown
set libfuncs(trim) unknown

# Run all of the tests listed in TESTCASES by invoking df-run-test on
# each.  Skip tests that not included by the user invoking runtest
# with the foo.exp=test.c syntax.

proc dfp-run-tests { testcases } {
    global runtests
    foreach test $testcases {
	# If we're only testing specific files and this isn't one of
	# them, skip it.
	if ![runtest_file_p $runtests $test] continue
	dfp-run-test $test
    }
}

# Run a single test case named by TESTCASE.
# Called for each test by dfp-run-tests.

proc dfp-run-test { testcase } {
    set fd [open $testcase r]
    while {[gets $fd line] != -1} {
	switch -regexp -- $line {
	    {^[ \t]*--.*$} {
		# Ignore comments.
	    }
	    {^[ \t]*$} {
		# Ignore blank lines.
	    }
	    {^[ \t]*[^:]*:[^:]*} {
		regsub -- {[ \t]*--.*$} $line {} line
		process-directive $line
	    }
	    default {
		process-test-case $testcase $line
	    }
	}
    }
    close $fd
}

# Return the appropriate constant from <fenv.h> for MODE.

proc c-rounding-mode { mode } { 
    switch [string tolower $mode] {
	"floor"		{ return 0 } # FE_DEC_DOWNWARD
	"half_even"	{ return 1 } # FE_DEC_TONEARESTFROMZERO
	"half_up"	{ return 2 } # FE_DEC_TONEAREST
	"down"		{ return 3 } # FE_DEC_TOWARDZERO
	"ceiling"	{ return 4 } # FE_DEC_UPWARD
    }
    error "unsupported rounding mode ($mode)"
}

# Return a string of C code that forms the preamble to perform the
# test named ID.

proc c-test-preamble { id } {
    append result "/* Machine generated test case for $id */\n"
    append result "\n"
    append result "\#include <assert.h>\n"
    append result "\#include <fenv.h>\n"
    append result "\#include <math.h>\n"
    append result "\n"
    append result "int main ()\n"
    append result "\{"
    return $result
}

# Return a string of C code that forms the postable to the test named ID.

proc c-test-postamble { id } {
    return "\}"
}

# Generate a C unary expression that applies OPERATION to OP.

proc c-unary-expression {operation op} {
    global operators
    global libfuncs
    if [catch {set result "$operators($operation) $op"}] {
	# If operation isn't in the operators or libfuncs arrays,
	# we'll throw an error.  That's what we want.
	# FIXME: append d32, etc. here.
	set result "$libfuncs($operation) ($op)"
    }
    return $result
}

# Generate a C binary expression that applies OPERATION to OP1 and OP2.

proc c-binary-expression {operation op1 op2} {
    global operators
    global libfuncs
    if [catch {set result "$op1 $operators($operation) $op2"}] {
	# If operation isn't in the operators or libfuncs arrays,
	# we'll throw an error.  That's what we want.
	set result "$libfuncs($operation) ($op1, $op2)"
    }
    return $result
}

# Return the most appropriate C type (_Decimal32, etc) for this test.

proc c-decimal-type { } {
    global directives
    if [catch {set precision $directives(precision)}] {
	set precision "_Decimal128"
    }  
    if { $precision == 7 } {
	set result "_Decimal32"
    } elseif {$precision == 16} {
	set result "_Decimal64"
    } elseif {$precision == 34} {
	set result "_Decimal128"
    } else {
	error "Unsupported precision"
    }
    return $result
}

# Return the size of the most appropriate C type, in bytes.

proc c-sizeof-decimal-type { } {
    switch [c-decimal-type] {
	"_Decimal32"    { return 4 }
	"_Decimal64"    { return 8 }
	"_Decimal128"   { return 16 }
    }
    error "Unsupported precision"
}

# Return the right literal suffix for CTYPE.

proc c-type-suffix { ctype } {
    switch $ctype {
        "_Decimal32"   { return "df" }
        "_Decimal64"   { return "dd" }
        "_Decimal128"  { return "dl" }
        "float"        { return "f" }
	"long double"  { return "l" }
    }
    return ""
}

proc nan-p { operand } {
    if {[string match "NaN*" $operand] || [string match "-NaN*" $operand]} {
	return 1
    } else {
	return 0
    }
}

proc infinity-p { operand } {
    if {[string match "Inf*" $operand] || [string match "-Inf*" $operand]} {
	return 1
    } else {
	return 0
    }
}

proc isnan-builtin-name { } {
    set bits [expr [c-sizeof-decimal-type] * 8]
    return "__builtin_isnand$bits"
}

proc isinf-builtin-name { } {
    set bits [expr [c-sizeof-decimal-type] * 8]
    return "__builtin_isinfd$bits"
}

# Return a string that declares a C union containing the decimal type
# and an unsigned char array of the right size.

proc c-union-decl { } {
    append result "  union {\n"
    append result "    [c-decimal-type] d;\n"
    append result "    unsigned char bytes\[[c-sizeof-decimal-type]\];\n"
    append result "  } u;"
    return $result
}

proc transform-hex-constant {value} {
    regsub \# $value {} value
    regsub -all (\.\.) $value {0x\1, } bytes
    return [list $bytes]
}

# Create a C program file (named using ID) containing a test for a
# binary OPERATION on OP1 and OP2 that expects RESULT and CONDITIONS.

proc make-c-test {testcase id operation result conditions op1 {op2 "NONE"}} {
    global directives
    set filename ${id}.c
    set outfd [open $filename w]

    puts $outfd [c-test-preamble $id]
    puts $outfd [c-union-decl]
    if {[string compare $result ?] != 0} {
	if {[string index $result 0] == "\#"} {
	    puts $outfd "  static unsigned char compare\[[c-sizeof-decimal-type]\] = [transform-hex-constant $result];"
	}
    }
    if {[string compare $op2 NONE] == 0} {
	if {[string index $op1 0] == "\#"} {
	    puts $outfd "  static unsigned char fill\[[c-sizeof-decimal-type]\] = [transform-hex-constant $op1];"
	}
    }

    puts $outfd ""
    puts $outfd "  /*  FIXME: Set rounding mode with fesetround() once in libc.  */"
    puts $outfd "  __dfp_set_round ([c-rounding-mode $directives(rounding)]);"
    puts $outfd ""

    # Build the expression to be tested.
    if {[string compare $op2 NONE] == 0} {
	if {[string index $op1 0] == "\#"} {
	    puts $outfd "  memcpy (u.bytes, fill, [c-sizeof-decimal-type]);"
	} else {
	    puts $outfd "  u.d = [c-unary-expression $operation [c-operand $op1]];"
	}
    } else {
	puts $outfd "  u.d = [c-binary-expression $operation [c-operand $op1] [c-operand $op2]];"
    }

    # Test the result.
    if {[string compare $result ?] != 0} {
	# Not an undefined result ..
	if {[string index $result 0] == "\#"} {
	    # Handle hex comparisons.
	    puts $outfd "  return memcmp (u.bytes, compare, [c-sizeof-decimal-type]);"
	} elseif {[nan-p $result]} {
	    puts $outfd "  return ![isnan-builtin-name] (u.d);"
	} elseif {[infinity-p $result]} {
	    puts $outfd "  return ![isinf-builtin-name] (u.d);"
	} else {
	    # Ordinary values.
	    puts $outfd "  return !(u.d == [c-operand $result]);"
	}
    } else {
	puts $outfd "  return 0;"
    }

    puts $outfd [c-test-postamble $id]
    close $outfd
    return $filename
}

# Is the test supported for this target?

proc supported-p { id op } {
    global directives
    global libfuncs

    # Ops that are unsupported.  Many of these tests fail because they
    # do not tolerate the C front-end rounding the value of floating
    # point literals to suit the type of the constant.  Otherwise, by
    # treating the `apply' operator like C assignment, some of them do
    # pass.
    switch -- $op {
	apply		{ return 0 }
    }

    # Ditto for the following miscellaneous tests.
    switch $id {
	addx1130	{ return 0 }
	addx1131	{ return 0 }
	addx1132	{ return 0 }
	addx1133	{ return 0 }
	addx1134	{ return 0 }
	addx1135	{ return 0 }
	addx1136	{ return 0 }
	addx1138	{ return 0 }
	addx1139	{ return 0 }
	addx1140	{ return 0 }
	addx1141	{ return 0 }
	addx1142	{ return 0 }
	addx1151	{ return 0 }
	addx1152	{ return 0 }
	addx1153	{ return 0 }
	addx1154	{ return 0 }
	addx1160	{ return 0 }
	addx690		{ return 0 }
	mulx263		{ return 0 }
	subx947		{ return 0 }
    }

    if [info exist libfuncs($op)] {
	# No library support for now.
	return 0
    }
    if [catch {c-rounding-mode $directives(rounding)}] {
	# Unsupported rounding mode.
	return 0
    }
    if [catch {c-decimal-type}] {
	# Unsupported precision.
	return 0
    }
    return 1
}

# Break LINE into a list of tokens.  Be sensitive to quoting.
# There has to be a better way to do this :-|

proc tokenize { line } {
    set quoting 0
    set tokens [list]

    foreach char [split $line {}] {
	if {!$quoting} {
	    if { [info exists token] && $char == " " } {
		if {[string compare "$token" "--"] == 0} {
		    # Only comments remain.
		    return $tokens
		}
		lappend tokens $token
		unset token
	    } else {
		if {![info exists token] && $char == "'" } {
		    set quoting 1
		} else {
		    if { $char != " " } {
			append token $char
		    }
		}
	    }
	} else {
	    # Quoting.
	    if { $char == "'" } {
		set quoting 0
		if [info exists token] {
		    lappend tokens $token
		    unset token
		} else {
		    lappend tokens {}
		}
	    } else {
		append token $char
	    }
	}
    }
    # Flush any residual token.
    if {[info exists token] && [string compare $token "--"]} {
	lappend tokens $token
    }
    return $tokens
}

# Process a directive in LINE.

proc process-directive { line } {
    global directives
    set keyword [string tolower [string trim [lindex [split $line :] 0]]]
    set value [string tolower [string trim [lindex [split $line :] 1]]]
    set directives($keyword) $value
}

# Produce a C99-valid floating point literal.

proc c-operand {operand} {
    set bits [expr 8 * [c-sizeof-decimal-type]]

    switch -glob -- $operand {
	"Inf*"		{ return "__builtin_infd${bits} ()" }
	"-Inf*"		{ return "- __builtin_infd${bits} ()" }
    	"NaN*"		{ return "__builtin_nand${bits} (\"\")" }
	"-NaN*"		{ return "- __builtin_nand${bits} (\"\")" }
	"sNaN*"		{ return "__builtin_nand${bits} (\"\")" }
	"-sNaN*"	{ return "- __builtin_nand${bits} (\"\")" }
    }

    if {[string first . $operand] < 0 && \
	    [string first E $operand] < 0 && \
	    [string first e $operand] < 0} {
	append operand .
    }
    set suffix [c-type-suffix [c-decimal-type]]
    return [append operand $suffix]
}

# Process an arithmetic test in LINE from TESTCASE.

proc process-test-case { testcase line } {
    set testfile [file tail $testcase]

    # Compress multiple spaces down to one.
    regsub -all {  *} $line { } line

    set args [tokenize $line]
    if {[llength $args] < 5} {
	error "Skipping invalid test: $line"
	return
    }
    
    set id [string trim [lindex $args 0]]
    set operation [string trim [lindex $args 1]]
    set operand1 [string trim [lindex $args 2]]
    
    if { [string compare [lindex $args 3] -> ] == 0 } {
	# Unary operation.
	set operand2 NONE
	set result_index 4
	set cond_index 5
    } else {
	# Binary operation.
	set operand2 [string trim [lindex $args 3]]
	if { [string compare [lindex $args 4] -> ] != 0 } {
	    warning "Skipping invalid test: $line"
	    return
	}
	set result_index 5
	set cond_index 6
    }

    set result [string trim [lindex $args $result_index]]
    set conditions [list]
    for { set i $cond_index } { $i < [llength $args] } { incr i } {
	lappend conditions [string tolower [lindex $args $i]]
    }
    
    # If this test is unsupported, say so.
    if ![supported-p $id $operation] {
	unsupported "$testfile ($id)"
	return
    }

    if {[string compare $operand1 \#] == 0 || \
	    [string compare $operand2 \#] == 0} {
	unsupported "$testfile ($id), null reference"
 	return
    }

    # Construct a C program and then compile/execute it on the target.
    # Grab some stuff from the c-torture.exp test driver for this.

    set cprog [make-c-test $testfile $id $operation $result $conditions $operand1 $operand2]
    c-torture-execute $cprog [target-specific-flags]
}

### Script mainline:

if [catch {set testdir $env(DECTEST)}] {
    # If $DECTEST is unset, skip this test driver altogether.
    return
}

torture-init
set-torture-options $DEC_TORTURE_OPTIONS

note "Using tests in $testdir"
dfp-run-tests [lsort [glob -nocomplain $testdir/*.decTest]]
unset testdir

torture-finish