diff options
Diffstat (limited to 'test/passes/optimize-instructions.wast')
| -rw-r--r-- | test/passes/optimize-instructions.wast | 289 |
1 files changed, 288 insertions, 1 deletions
diff --git a/test/passes/optimize-instructions.wast b/test/passes/optimize-instructions.wast index c305ccbbb..0169bb054 100644 --- a/test/passes/optimize-instructions.wast +++ b/test/passes/optimize-instructions.wast @@ -1556,7 +1556,21 @@ (i32.shr_s (i32.shl (i32.shr_u - (i32.load8_s ;; one byte, but reduced to 7 + (i32.load8_s ;; one byte, but sexted to 32 + (i32.const 256) + ) + (i32.const 1) + ) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (drop + (i32.shr_s + (i32.shl + (i32.shr_u + (i32.load8_u ;; one byte, but reduced to 7 (i32.const 256) ) (i32.const 1) @@ -1691,4 +1705,277 @@ ) ) ) + (func $local-info-zero-ext (param $0 i32) (param $1 i32) + (local $x i32) + (local $y i32) + (local $z i32) + (local $w i32) + (set_local $x + (i32.const 212) ;; mask is unneeded, we are small + ) + (drop + (i32.and + (get_local $x) + (i32.const 255) + ) + ) + (set_local $y + (i32.const 500) ;; mask is needed, we are too big + ) + (drop + (i32.and + (get_local $y) + (i32.const 255) + ) + ) + (set_local $0 + (i32.const 212) ;; mask is unneeded, but we are a param, not a var, so no + ) + (drop + (i32.and + (get_local $0) + (i32.const 255) + ) + ) + (set_local $z + (i32.const 212) ;; mask is unneeded, we are small + ) + (set_local $z + (i32.const 220) ;; mask is still unneeded even with 2 uses + ) + (drop + (i32.and + (get_local $z) + (i32.const 255) + ) + ) + (set_local $w + (i32.const 212) ;; mask is unneeded, we are small + ) + (set_local $w + (i32.const 1000) ;; mask is needed, one use is too big + ) + (drop + (i32.and + (get_local $w) + (i32.const 255) + ) + ) + ) + (func $local-info-sign-ext-bitsize (param $0 i32) (param $1 i32) + (local $x i32) + (local $y i32) + (local $z i32) + (local $w i32) + (set_local $x + (i32.const 127) ;; mask is unneeded, we are small + ) + (drop + (i32.shr_s + (i32.shl + (get_local $x) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $y + (i32.const 128) ;; mask is needed, we are too big + ) + (drop + (i32.shr_s + (i32.shl + (get_local $y) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $0 + (i32.const 127) ;; mask is unneeded, but we are a param, not a var, so no + ) + (drop + (i32.shr_s + (i32.shl + (get_local $0) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $z + (i32.const 127) ;; mask is unneeded, we are small + ) + (set_local $z + (i32.const 100) ;; mask is still unneeded even with 2 uses + ) + (drop + (i32.shr_s + (i32.shl + (get_local $z) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $w + (i32.const 127) ;; mask is unneeded, we are small + ) + (set_local $w + (i32.const 150) ;; mask is needed, one use is too big + ) + (drop + (i32.shr_s + (i32.shl + (get_local $w) + (i32.const 24) + ) + (i32.const 24) + ) + ) + ) + (func $local-info-sign-ext-already-exted (param $0 i32) (param $1 i32) + (local $x i32) + (local $y i32) + (local $z i32) + (local $w i32) + (set_local $x + (i32.shr_s + (i32.shl + (get_local $0) ;; already sign-exted here, so no need later + (i32.const 24) + ) + (i32.const 24) + ) + ) + (drop + (i32.shr_s + (i32.shl + (get_local $x) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $y + (i32.shr_s + (i32.shl + (get_local $0) ;; already sign-exted here, but wrong bit size + (i32.const 16) + ) + (i32.const 16) + ) + ) + (drop + (i32.shr_s + (i32.shl + (get_local $y) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $0 + (i32.shr_s + (i32.shl + (get_local $0) ;; already sign-exted here, so no need later, but we are a param + (i32.const 24) + ) + (i32.const 24) + ) + ) + (drop + (i32.shr_s + (i32.shl + (get_local $0) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $z + (i32.shr_s + (i32.shl + (get_local $0) ;; already sign-exted here, so no need later + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $z + (i32.shr_s + (i32.shl + (get_local $1) ;; already sign-exted here, so no need later + (i32.const 24) + ) + (i32.const 24) + ) + ) + (drop + (i32.shr_s + (i32.shl + (get_local $z) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $w + (i32.shr_s + (i32.shl + (get_local $0) ;; already sign-exted here, so no need later + (i32.const 24) + ) + (i32.const 24) + ) + ) + (set_local $w + (i32.shr_s + (i32.shl + (get_local $0) ;; not quite a sign-ext + (i32.const 23) + ) + (i32.const 24) + ) + ) + (drop + (i32.shr_s + (i32.shl + (get_local $w) + (i32.const 24) + ) + (i32.const 24) + ) + ) + (drop ;; odd corner case + (i32.shr_s + (i32.shl + (get_local $0) ;; param, so we should know nothing + (i32.const 24) + ) + (i32.const 23) ;; different shift, smaller + ) + ) + ) + (func $signed-loads-fill-the-bits (param $$e i32) (result i32) + (local $$0 i32) + (local $$conv i32) + (set_local $$0 + (i32.load8_s ;; one byte, but 32 bits due to sign-extend + (i32.const 1024) + ) + ) + (set_local $$conv + (i32.and + (get_local $$0) + (i32.const 255) ;; so we need this zexting! + ) + ) + (return + (i32.eq + (get_local $$conv) + (get_local $$e) + ) + ) + ) ) |