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| author | Max Graey <maxgraey@gmail.com> | 2021-07-20 22:28:07 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-20 12:28:07 -0700 |
| commit | e67d50d5a6290ec9968344ee5712ebf62847fea8 (patch) | |
| tree | f906ec3b52daa307b6b810c4a8548999ca727c11 /test/lit/passes/optimize-instructions.wast | |
| parent | fb9de9d391a7272548dcc41cd8229076189d7398 (diff) | |
| download | binaryen-e67d50d5a6290ec9968344ee5712ebf62847fea8.tar.gz binaryen-e67d50d5a6290ec9968344ee5712ebf62847fea8.tar.bz2 binaryen-e67d50d5a6290ec9968344ee5712ebf62847fea8.zip | |
[Optimize Instructions] Simplify sign extentions (#4004)
requiring sign-extension:
```
i64(x) << 56 >> 56 ==> i64.extend8_s(x)
i64(x) << 48 >> 48 ==> i64.extend16_s(x)
i64(x) << 32 >> 32 ==> i64.extend32_s(x)
i64.extend_i32_s(i32.wrap_i64(x)) ==> i64.extend32_s(x)
```
general:
```
i32.wrap_i64(i64.extend_i32_s(x)) ==> x
i32.wrap_i64(i64.extend_i32_u(x)) ==> x
```
Diffstat (limited to 'test/lit/passes/optimize-instructions.wast')
| -rw-r--r-- | test/lit/passes/optimize-instructions.wast | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/test/lit/passes/optimize-instructions.wast b/test/lit/passes/optimize-instructions.wast index e8296e8cc..5fa703bd2 100644 --- a/test/lit/passes/optimize-instructions.wast +++ b/test/lit/passes/optimize-instructions.wast @@ -2707,11 +2707,7 @@ ;; CHECK-NEXT: (i32.shr_s ;; CHECK-NEXT: (i32.shl ;; CHECK-NEXT: (i32.shr_u - ;; CHECK-NEXT: (i32.wrap_i64 - ;; CHECK-NEXT: (i64.extend_i32_s - ;; CHECK-NEXT: (i32.const -1) - ;; CHECK-NEXT: ) - ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (i32.const -1) ;; CHECK-NEXT: (i32.const 24) ;; CHECK-NEXT: ) ;; CHECK-NEXT: (i32.const 24) @@ -2737,11 +2733,7 @@ ) ;; CHECK: (func $sext-24-shr_u-wrap-extend (result i32) ;; CHECK-NEXT: (i32.shr_u - ;; CHECK-NEXT: (i32.wrap_i64 - ;; CHECK-NEXT: (i64.extend_i32_s - ;; CHECK-NEXT: (i32.const -1) - ;; CHECK-NEXT: ) - ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (i32.const -1) ;; CHECK-NEXT: (i32.const 25) ;; CHECK-NEXT: ) ;; CHECK-NEXT: ) @@ -11256,6 +11248,22 @@ ) ) ) + + ;; i32.wrap_i64(i64.extend_i32_s(x)) ==> x + ;; i32.wrap_i64(i64.extend_i32_u(x)) ==> x + + ;; CHECK: (func $sign-and-zero-extention-elimination (param $x i32) + ;; CHECK-NEXT: (drop + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (drop + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $sign-and-zero-extention-elimination (param $x i32) + (drop (i32.wrap_i64 (i64.extend_i32_s (local.get $x)))) + (drop (i32.wrap_i64 (i64.extend_i32_u (local.get $x)))) + ) ;; CHECK: (func $optimize-shifts (param $x i32) (param $y i32) (param $z i64) (param $w i64) ;; CHECK-NEXT: (drop ;; CHECK-NEXT: (local.get $x) |