summaryrefslogtreecommitdiffstats
path: root/js/src/jit-test/tests/wasm/regress/baseline-extend8.js
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/wasm/regress/baseline-extend8.js
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/wasm/regress/baseline-extend8.js')
-rw-r--r--js/src/jit-test/tests/wasm/regress/baseline-extend8.js34
1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/regress/baseline-extend8.js b/js/src/jit-test/tests/wasm/regress/baseline-extend8.js
new file mode 100644
index 0000000000..6e637e97c9
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/regress/baseline-extend8.js
@@ -0,0 +1,34 @@
+// This attempts to test that we can do an 8-bit sign extend no matter what the
+// source register. This test is arguably somewhat tied to the baseline
+// compiler's register allocator, but is still appropriate for most simple
+// register allocators. It works by filling an increasing number of registers
+// with values so as eventually to force the source operand for extend8_s into a
+// register that does not have a byte personality.
+
+for ( let i=0; i < 8; i++) {
+ let txt =
+ `(module
+ (func (export "f") (param i32) (result i32)
+ ${adds(i)}
+ (local.set 0 (i32.extend8_s (i32.add (local.get 0) (i32.const 1))))
+ ${drops(i)}
+ (local.get 0)))`;
+ let ins = new WebAssembly.Instance(new WebAssembly.Module(wasmTextToBinary(txt)));
+ assertEq(ins.exports.f(254), -1);
+}
+
+function adds(n) {
+ let s = ""
+ for ( let i=0; i < n; i++ )
+ s += "(i32.add (local.get 0) (i32.const 1))\n";
+ return s;
+}
+
+function drops(n) {
+ let s = "";
+ for ( let i=0; i < n; i++ )
+ s += "drop\n";
+ return s;
+}
+
+