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|
(module
(import "fuzzing-support" "log-f32" (func $logf32 (param f32)))
(import "fuzzing-support" "log-f64" (func $logf64 (param f64)))
(func $test32 (export "test32")
(call $logf32
(f32.add
(f32.const -nan:0x7fff82)
(f32.neg
(f32.const -nan:0x7ff622)
)
)
)
(call $logf32
(f32.sub
(f32.const -nan:0x7fff82)
(f32.neg
(f32.const -nan:0x7ff622)
)
)
)
(call $logf32
(f32.div
(f32.const -nan:0x7fff82)
(f32.neg
(f32.const -nan:0x7ff622)
)
)
)
(call $logf32
(f32.min
(f32.const -nan:0x7fff82)
(f32.neg
(f32.const -nan:0x7ff622)
)
)
)
(call $logf32
(f32.max
(f32.const -nan:0x7fff82)
(f32.neg
(f32.const -nan:0x7ff622)
)
)
)
)
(func $test64 (export "test64")
(call $logf64
(f64.add
(f64.const -nan:0xfffffffffff82)
(f64.neg
(f64.const -nan:0xfffffffffa622)
)
)
)
(call $logf64
(f64.sub
(f64.const -nan:0xfffffffffff82)
(f64.neg
(f64.const -nan:0xfffffffffa622)
)
)
)
(call $logf64
(f64.mul
(f64.const -nan:0xfffffffffff82)
(f64.neg
(f64.const -nan:0xfffffffffa622)
)
)
)
(call $logf64
(f64.div
(f64.const -nan:0xfffffffffff82)
(f64.neg
(f64.const -nan:0xfffffffffa622)
)
)
)
(call $logf64
(f64.copysign
(f64.const -nan:0xfffffffffff82)
(f64.neg
(f64.const -nan:0xfffffffffa622)
)
)
)
(call $logf64
(f64.min
(f64.const -nan:0xfffffffffff82)
(f64.neg
(f64.const -nan:0xfffffffffa622)
)
)
)
(call $logf64
(f64.max
(f64.const -nan:0xfffffffffff82)
(f64.neg
(f64.const -nan:0xfffffffffa622)
)
)
)
)
(func $ignore (export "ignore")
;; none of these are nan inputs, so the interpreter must not change the sign
(call $logf32
(f32.div
(f32.const 0)
(f32.neg
(f32.const 0)
)
)
)
(call $logf32
(f32.div
(f32.const -0)
(f32.neg
(f32.const 0)
)
)
)
(call $logf32
(f32.div
(f32.const 0)
(f32.neg
(f32.const -0)
)
)
)
(call $logf32
(f32.div
(f32.const -0)
(f32.neg
(f32.const -0)
)
)
)
)
)
(module
(import "fuzzing-support" "log-i32" (func $log (param i32)))
(func $signed-comparison-to-unsigned
(call $log
(i32.eq ;; should be false
(i32.shr_s ;; 0x0000006b after the sign-extend
(i32.shl
(i32.const -25749) ;; 0xffff9b6b
(i32.const 24)
)
(i32.const 24)
)
(i32.const -149) ;; 0xffffff6b - high bits are set, but not sign bit
)
)
;; the same, with mixed high bits. mixed bits mean the two sides can never be
;; equal, so the eq is always false
(call $log
(i32.eq
(i32.shr_s
(i32.shl
(i32.const -25749)
(i32.const 24)
)
(i32.const 24)
)
(i32.const 0xffffeb)
)
)
;; the same, with !=, so the result is always true
(call $log
(i32.ne
(i32.shr_s
(i32.shl
(i32.const -25749)
(i32.const 24)
)
(i32.const 24)
)
(i32.const 0xffffeb)
)
)
)
(func $foo (export "foo") (param $0 i32)
;; 8 - 0x80000000 < 0
;;
;; is not the same as
;;
;; 8 < 0x80000000
;;
;; because of overflow. the former is true, the latter is false
(call $log
(i32.le_s
(i32.sub
(i32.const 8)
(block $label$1 (result i32) ;; the block prevents us from optimizing this
;; which would avoid the issue. a global or a
;; call would do the same, all would make the
;; value only visible at runtime
(i32.const 0x80000000)
)
)
(i32.const 0)
)
)
;; for comparison, without the block.
(call $log
(i32.le_s
(i32.sub
(i32.const 8)
(i32.const 0x80000000)
)
(i32.const 0)
)
)
;; for comparison, what X - Y < 0 => X < Y would lead to, which has a
;; different value
(call $log
(i32.le_s
(i32.const 8)
(i32.const 0x80000000)
)
)
)
(func $shift (param $0 i32)
(call $log
;; x << 24 >> 24 << 30 >> 24 - the extra shifts make it invalid to do the
;; optimization of not repeating a sign-extend. That is, this would be valid
;; if the 30 were replaced by a 24.
(i32.shr_s
(i32.shl
(i32.shr_s
(i32.shl
(local.get $0)
(i32.const 24)
)
(i32.const 24)
)
(i32.const 30)
)
(i32.const 24)
)
)
)
(func $do-shift (export "do-shift")
(call $shift
(i32.const 65419)
)
)
;; similar, but with the value compared to having the sign bit set but no
;; upper bits
(func $compare-maybe-signed-eq (param $0 i32) (result i32)
(i32.eq
(i32.shr_s
(i32.shl
(local.get $0)
(i32.const 24)
)
(i32.const 24)
)
(i32.const 128)
)
)
(func $call-compare-maybe-signed-eq (export "call-compare-maybe-signed-eq") (result i32)
(call $compare-maybe-signed-eq
(i32.const 128)
)
)
;; the same with !=
(func $compare-maybe-signed-ne (param $0 i32) (result i32)
(i32.ne
(i32.shr_s
(i32.shl
(local.get $0)
(i32.const 24)
)
(i32.const 24)
)
(i32.const 128)
)
)
(func $call-compare-maybe-signed-ne (export "call-compare-maybe-signed-ne") (result i32)
(call $compare-maybe-signed-ne
(i32.const 128)
)
)
)
|
