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| author | Max Graey <maxgraey@gmail.com> | 2021-07-16 22:33:46 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-16 12:33:46 -0700 |
| commit | 023bbb28f393032a8df6c743319cd835feddf5ba (patch) | |
| tree | 0a34035df50a30243c7ed9c75d07255f659f0615 /test/lit/passes/optimize-instructions.wast | |
| parent | 18375122edc23a5ff9acc0c4f930357687ff24dd (diff) | |
| download | binaryen-023bbb28f393032a8df6c743319cd835feddf5ba.tar.gz binaryen-023bbb28f393032a8df6c743319cd835feddf5ba.tar.bz2 binaryen-023bbb28f393032a8df6c743319cd835feddf5ba.zip | |
[Optimize-Instructions] Simplify sign patterns like x < 0 ? -1 : 1 (#3756)
i32(x) < 0 ? i32(-1) : i32(1) -> x >> 31 | 1
i64(x) < 0 ? i64(-1) : i64(1) -> x >> 63 | 1
This shrinks 2 bytes.
Diffstat (limited to 'test/lit/passes/optimize-instructions.wast')
| -rw-r--r-- | test/lit/passes/optimize-instructions.wast | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/test/lit/passes/optimize-instructions.wast b/test/lit/passes/optimize-instructions.wast index 728081e9f..e8296e8cc 100644 --- a/test/lit/passes/optimize-instructions.wast +++ b/test/lit/passes/optimize-instructions.wast @@ -587,6 +587,122 @@ ) ) ) + ;; CHECK: (func $select-sign-32-lt (param $x i32) (result i32) + ;; CHECK-NEXT: (i32.or + ;; CHECK-NEXT: (i32.shr_s + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: (i32.const 31) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (i32.const 1) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $select-sign-32-lt (param $x i32) (result i32) + (select + (i32.const -1) + (i32.const 1) + (i32.lt_s + (local.get $x) + (i32.const 0) + ) + ) + ) + ;; CHECK: (func $select-sign-32-ge (param $x i32) (result i32) + ;; CHECK-NEXT: (i32.or + ;; CHECK-NEXT: (i32.shr_s + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: (i32.const 31) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (i32.const 1) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $select-sign-32-ge (param $x i32) (result i32) + (select + (i32.const 1) + (i32.const -1) + (i32.ge_s + (local.get $x) + (i32.const 0) + ) + ) + ) + ;; CHECK: (func $select-sign-64-lt (param $x i64) (result i64) + ;; CHECK-NEXT: (i64.or + ;; CHECK-NEXT: (i64.shr_s + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: (i64.const 63) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (i64.const 1) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $select-sign-64-lt (param $x i64) (result i64) + (select + (i64.const -1) + (i64.const 1) + (i64.lt_s + (local.get $x) + (i64.const 0) + ) + ) + ) + ;; CHECK: (func $select-sign-64-ge (param $x i64) (result i64) + ;; CHECK-NEXT: (i64.or + ;; CHECK-NEXT: (i64.shr_s + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: (i64.const 63) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (i64.const 1) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $select-sign-64-ge (param $x i64) (result i64) + (select + (i64.const 1) + (i64.const -1) + (i64.ge_s + (local.get $x) + (i64.const 0) + ) + ) + ) + ;; CHECK: (func $select-sign-lt-skip-1 (param $x i32) (result i64) + ;; CHECK-NEXT: (select + ;; CHECK-NEXT: (i64.const -1) + ;; CHECK-NEXT: (i64.const 1) + ;; CHECK-NEXT: (i32.lt_s + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: (i32.const 0) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $select-sign-lt-skip-1 (param $x i32) (result i64) + (select + (i64.const -1) + (i64.const 1) + (i32.lt_s + (local.get $x) + (i32.const 0) + ) + ) + ) + ;; CHECK: (func $select-sign-lt-skip-2 (param $x i64) (result i32) + ;; CHECK-NEXT: (select + ;; CHECK-NEXT: (i32.const -1) + ;; CHECK-NEXT: (i32.const 1) + ;; CHECK-NEXT: (i64.lt_s + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: (i64.const 0) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $select-sign-lt-skip-2 (param $x i64) (result i32) + (select + (i32.const -1) + (i32.const 1) + (i64.lt_s + (local.get $x) + (i64.const 0) + ) + ) + ) ;; CHECK: (func $load8_s-and-255 (result i32) ;; CHECK-NEXT: (i32.load8_u ;; CHECK-NEXT: (i32.const 0) |