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Reduces LUT needed by mul extension

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This commit is contained in:
Julien THILLARD
2025-11-14 19:08:41 +01:00
parent ca03b29774
commit e55c3fde14
22 changed files with 923 additions and 241 deletions
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59
bench/tests/op/divuw.s
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@@ -1,14 +1,55 @@
# expected: ffffffffffffffff, dead0, 1
.text
_start:
li x2, 0xdead0
li x3, 0x0
li x4, 0x1
li x6, 0xdead0
li x2, 0xdead0 # 912080
li x3, 0x1234 # 4660
li x4, 1 # 1
li x5, -123456 # 0xfffe1dc0 (4294843840)
li x6, 0xdead0 # duplicate of x2
li x7, -765432 # 0xffed32b8 (4294201864)
li x8, 123456 # 123456
li x9, -234567 # 0xfffc7239 (4294732729)
li x10, 0xffffffff # max unsigned 32b (4294967295)
li x11, 0x80000000 # 2147483648
# Div by 0
divuw x31, x2, x3
# Basic divisions
# 1. DIVUW : a / 1
divuw x31, x2, x4
# expected: 000000000000dead0
# 2. DIVUW : a / a
divuw x31, x2, x6
# expected: 0000000000000001
# 3. DIVUW : unsigned(0xfffe1dc0) / 123456
divuw x31, x5, x8
# expected: 00000000000087e4
# 4. DIVUW : unsigned(0xffed32b8) / 123456
divuw x31, x7, x8
# expected: 00000000000087df
# 5. DIVUW : unsigned(123456) / unsigned(0xffed32b8)
divuw x31, x8, x7
# expected: 0000000000000000
# 6. DIVUW : unsigned(x7) / unsigned(x9)
divuw x31, x7, x9
# expected: 0000000000000000
# 7. DIVUW : max32 / 2
li x12, 2
divuw x31, x10, x12
# expected: 000000007fffffff
# 8. DIVUW : min32 / 1
divuw x31, x11, x4
# expected: ffffffff80000000
# 9. DIVUW : 0 / any
divuw x31, x0, x2
# expected: 0000000000000000
# 10. DIVUW : any / 0
divuw x31, x2, x0
# expected: ffffffffffffffff
divuw x31, x7, x0
# expected: ffffffffffffffff