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https://git.code.sf.net/p/quake/quakeforge
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b82174558b
I always suspected the overflow conversions were UB, but with gcc doing different things on arm, I thought it was about time to abandon those particular tests. What I was not expecting was for the return value of strcmp to be "UB" (in that there's no guarantee of the exact value, just < = > 0). Fortunately, nothing actually relies on the value of the op other than the tests, so modify the test to make the behavior well defined.
206 lines
7.8 KiB
C
206 lines
7.8 KiB
C
#include "head.c"
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#include "QF/mathlib.h"
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static pr_ivec4_t long_conv_init[] = {
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{ 5, -5, 0x80000000, 0x7fffffff}, //int
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{ 0x3fc00000, 0x40100000, 0x40700000, 0x40a00000}, //float 1.5, 2.25, 3.75, 5
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{ 99, 0x80000000, 0x80000000, 99}, //long
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{ 256, 0, 0x7fffffff, 0}, //long
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{ 0, 0x3ff80000, 0, 0x40020000}, //double 1.5, 2.25, 3.75, 5
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{ 0, 0x400e0000, 0, 0x40140000},
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{ 5, -5, 0x80000000, 0x7fffffff}, //uint
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{ ~0, 1, 0x80000000, 0}, //bool32
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{ 99, 0x80000000, 0x80000000, 99}, //ulong
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{ 256, 0, 0x7fffffff, 0}, //ulong
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{ ~0, ~0, ~0, 0}, //bool64
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{ 0, ~0, 0, 0}, //bool64
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 0},
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};
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static pr_ivec4_t long_conv_expect[] = {
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{ 5, -5, 0x80000000, 0x7fffffff}, //int
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{ 0x3fc00000, 0x40100000, 0x40700000, 0x40a00000}, //float 1.5, 2.25, 3.75, 5
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{ 99, 0x80000000, 0x80000000, 99}, //long
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{ 256, 0, 0x7fffffff, 0}, //long
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{ 0, 0x3ff80000, 0, 0x40020000}, //double 1.5, 2.25, 3.75, 5
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{ 0, 0x400e0000, 0, 0x40140000},
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{ 5, -5, 0x80000000, 0x7fffffff}, //uint
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{ ~0, 1, 0x80000000, 0}, //bool32
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{ 99, 0x80000000, 0x80000000, 99}, //ulong
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{ 256, 0, 0x7fffffff, 0}, //ulong
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{ ~0, ~0, ~0, 0}, //bool64
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{ 0, ~0, 0, 0}, //bool64
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{ 5, 0, -5, 0xffffffff}, // int
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{ 0x80000000, 0xffffffff, 0x7fffffff, 0},
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{ 1, 0, 2, 0}, // float
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{ 3, 0, 5, 0},
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{ 99, 0x80000000, 0x80000000, 99}, // long
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{ 256, 0, 0x7fffffff, 0},
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{ 1, 0, 2, 0}, // double
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{ 3, 0, 5, 0},
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{ 5, 0, -5, 0}, // uint
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{ 0x80000000, 0, 0x7fffffff, 0},
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{ 1, 0, 1, 0}, // bool32
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{ 1, 0, 0, 0},
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{ 99, 0x80000000, 0x80000000, 99}, // ulong
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{ 256, 0, 0x7fffffff, 0},
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{ 1, 0, 1, 0}, // bool64
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{ 1, 0, 0, 0},
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};
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static dstatement_t long_conv_1_statements[] = {
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{ OP(0, 0, 0, OP_LEA_A), 4, 0, 112 }, // init index
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{ OP(0, 0, 0, OP_LEA_A), 8, 0, 113 }, // init index for 64-bits
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//loop:
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{ OP(0, 0, 0, OP_LEA_C), 112, -1, 112 }, // dec index
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{ OP(0, 0, 0, OP_LEA_C), 113, -2, 113 }, // dec index for 64-bits
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{ OP(0, 0, 0, OP_IFAE), 2, 0, 112 },
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{ OP(0, 0, 0, OP_BREAK), 0, 0, 0 },
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{ OP(0, 0, 0, OP_WITH), 4, 112, 1 },
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{ OP(0, 0, 0, OP_WITH), 4, 113, 2 },
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{ OP(1, 1, 2, OP_CONV), 0, 0002, 48 },
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{ OP(1, 1, 2, OP_CONV), 4, 0012, 56 },
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{ OP(2, 1, 2, OP_CONV), 8, 0022, 64 },
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{ OP(2, 1, 2, OP_CONV), 16, 0032, 72 },
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{ OP(1, 1, 2, OP_CONV), 24, 0042, 80 },
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{ OP(1, 1, 2, OP_CONV), 28, 0052, 88 },
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{ OP(2, 1, 2, OP_CONV), 32, 0062, 96 },
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{ OP(2, 1, 2, OP_CONV), 40, 0072, 104 },
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{ OP(0, 0, 0, OP_JUMP_A), -14, 0, 0 },
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};
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static dstatement_t long_conv_2_statements[] = {
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{ OP(0, 0, 0, OP_LEA_A), 4, 0, 112 }, // index
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{ OP(0, 0, 0, OP_LEA_A), 8, 0, 113 }, // init index for 64-bits
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//loop:
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{ OP(0, 0, 0, OP_LEA_C), 112, -2, 112 }, // dec index
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{ OP(0, 0, 0, OP_LEA_C), 113, -4, 113 }, // dec index for 64-bits
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{ OP(0, 0, 0, OP_IFAE), 2, 0, 112 },
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{ OP(0, 0, 0, OP_BREAK), 0, 0, 0 },
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{ OP(0, 0, 0, OP_WITH), 4, 112, 1 },
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{ OP(0, 0, 0, OP_WITH), 4, 113, 2 },
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{ OP(1, 1, 2, OP_CONV), 0, 0102, 48 },
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{ OP(1, 1, 2, OP_CONV), 4, 0112, 56 },
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{ OP(2, 1, 2, OP_CONV), 8, 0122, 64 },
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{ OP(2, 1, 2, OP_CONV), 16, 0132, 72 },
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{ OP(1, 1, 2, OP_CONV), 24, 0142, 80 },
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{ OP(1, 1, 2, OP_CONV), 28, 0152, 88 },
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{ OP(2, 1, 2, OP_CONV), 32, 0162, 96 },
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{ OP(2, 1, 2, OP_CONV), 40, 0172, 104 },
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{ OP(0, 0, 0, OP_JUMP_A), -14, 0, 0 },
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};
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static dstatement_t long_conv_3a_statements[] = {
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{ OP(1, 1, 2, OP_CONV), 0, 0202, 48 },
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{ OP(1, 1, 2, OP_CONV), 3, 0002, 54 },
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{ OP(1, 1, 2, OP_CONV), 4, 0212, 56 },
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{ OP(1, 1, 2, OP_CONV), 7, 0012, 62 },
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{ OP(2, 1, 2, OP_CONV), 8, 0222, 64 },
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{ OP(2, 1, 2, OP_CONV), 14, 0022, 70 },
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{ OP(2, 1, 2, OP_CONV), 16, 0232, 72 },
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{ OP(2, 1, 2, OP_CONV), 22, 0032, 78 },
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{ OP(1, 1, 2, OP_CONV), 24, 0242, 80 },
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{ OP(1, 1, 2, OP_CONV), 27, 0042, 86 },
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{ OP(1, 1, 2, OP_CONV), 28, 0252, 88 },
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{ OP(1, 1, 2, OP_CONV), 31, 0052, 94 },
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{ OP(2, 1, 2, OP_CONV), 32, 0262, 96 },
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{ OP(2, 1, 2, OP_CONV), 38, 0062, 102 },
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{ OP(2, 1, 2, OP_CONV), 40, 0272, 104 },
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{ OP(2, 1, 2, OP_CONV), 46, 0072, 110 },
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};
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static dstatement_t long_conv_3b_statements[] = {
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{ OP(1, 1, 2, OP_CONV), 0, 0002, 48 },
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{ OP(1, 1, 2, OP_CONV), 1, 0202, 50 },
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{ OP(1, 1, 2, OP_CONV), 4, 0012, 56 },
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{ OP(1, 1, 2, OP_CONV), 5, 0212, 58 },
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{ OP(2, 1, 2, OP_CONV), 8, 0022, 64 },
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{ OP(2, 1, 2, OP_CONV), 10, 0222, 66 },
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{ OP(2, 1, 2, OP_CONV), 16, 0032, 72 },
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{ OP(2, 1, 2, OP_CONV), 18, 0232, 74 },
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{ OP(1, 1, 2, OP_CONV), 24, 0042, 80 },
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{ OP(1, 1, 2, OP_CONV), 25, 0242, 82 },
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{ OP(1, 1, 2, OP_CONV), 28, 0052, 88 },
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{ OP(1, 1, 2, OP_CONV), 29, 0252, 90 },
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{ OP(2, 1, 2, OP_CONV), 32, 0062, 96 },
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{ OP(2, 1, 2, OP_CONV), 34, 0262, 98 },
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{ OP(2, 1, 2, OP_CONV), 40, 0072, 104 },
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{ OP(2, 1, 2, OP_CONV), 42, 0272, 106 },
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};
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static dstatement_t long_conv_4_statements[] = {
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{ OP(1, 1, 2, OP_CONV), 0, 0302, 48 },
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{ OP(1, 1, 2, OP_CONV), 4, 0312, 56 },
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{ OP(2, 1, 2, OP_CONV), 8, 0322, 64 },
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{ OP(2, 1, 2, OP_CONV), 16, 0332, 72 },
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{ OP(1, 1, 2, OP_CONV), 24, 0342, 80 },
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{ OP(1, 1, 2, OP_CONV), 28, 0352, 88 },
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{ OP(2, 1, 2, OP_CONV), 32, 0362, 96 },
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{ OP(2, 1, 2, OP_CONV), 40, 0372, 104 },
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};
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test_t tests[] = {
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{
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.desc = "long conv 1",
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.extra_globals = 4 * 1,
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.num_globals = num_globals(long_conv_init,long_conv_expect),
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.num_statements = num_statements (long_conv_1_statements),
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.statements = long_conv_1_statements,
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.init_globals = (pr_int_t *) long_conv_init,
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.expect_globals = (pr_int_t *) long_conv_expect,
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},
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{
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.desc = "long conv 2",
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.extra_globals = 4 * 1,
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.num_globals = num_globals(long_conv_init,long_conv_expect),
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.num_statements = num_statements (long_conv_2_statements),
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.statements = long_conv_2_statements,
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.init_globals = (pr_int_t *) long_conv_init,
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.expect_globals = (pr_int_t *) long_conv_expect,
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},
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{
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.desc = "long conv 3a",
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.extra_globals = 4 * 1,
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.num_globals = num_globals(long_conv_init,long_conv_expect),
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.num_statements = num_statements (long_conv_3a_statements),
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.statements = long_conv_3a_statements,
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.init_globals = (pr_int_t *) long_conv_init,
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.expect_globals = (pr_int_t *) long_conv_expect,
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},
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{
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.desc = "long conv 3b",
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.extra_globals = 4 * 1,
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.num_globals = num_globals(long_conv_init,long_conv_expect),
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.num_statements = num_statements (long_conv_3b_statements),
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.statements = long_conv_3b_statements,
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.init_globals = (pr_int_t *) long_conv_init,
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.expect_globals = (pr_int_t *) long_conv_expect,
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},
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{
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.desc = "long conv 4",
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.extra_globals = 4 * 1,
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.num_globals = num_globals(long_conv_init,long_conv_expect),
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.num_statements = num_statements (long_conv_4_statements),
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.statements = long_conv_4_statements,
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.init_globals = (pr_int_t *) long_conv_init,
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.expect_globals = (pr_int_t *) long_conv_expect,
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},
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};
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#include "main.c"
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