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@@ -0,0 +1,107 @@
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+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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+From: Thibaud Michaud <[email protected]>
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+Date: Mon, 10 Feb 2025 14:31:16 +0100
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+Subject: Merged: "Reland "Lower the maximum JS parameter count""
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+
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+This is a reland of commit 1827ed8345369ca50a55a10ab3e45bcc581c6339
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+
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+Before the change, one of the nodes had more than 2^16 inputs
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+so optimization bailed out.
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+After the change, the function has fewer parameters and gets
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+optimized, and the register allocator struggles with that many
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+parameters and times out.
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+Just mark the test as slow for now.
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+
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+Original change's description:
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+> Lower the maximum JS parameter count
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+>
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+> To allow extra implicit arguments on the call node without overflowing
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+> the uint16_t input count, in particular in the wasm-to-js wrapper where
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+> we don't have a bailout mechanism.
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+>
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+> [email protected]
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+>
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+> Fixed: 394350433
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+> Change-Id: I61d2e2387539cafd6a0909c3ee035c93d0217be3
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+> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6239302
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+> Reviewed-by: Toon Verwaest <[email protected]>
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+> Commit-Queue: Thibaud Michaud <[email protected]>
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+> Cr-Commit-Position: refs/heads/main@{#98556}
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+
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+(cherry picked from commit 84a0e230dabc2c874a129c2280d6be4f45636225)
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+
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+Change-Id: Ibdfbc0850ca709f0418efdb1ed89a82796a9c378
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+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/6268260
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+Reviewed-by: Toon Verwaest <[email protected]>
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+Commit-Queue: Thibaud Michaud <[email protected]>
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+Cr-Commit-Position: refs/branch-heads/13.2@{#80}
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+Cr-Branched-From: 24068c59cedad9ee976ddc05431f5f497b1ebd71-refs/heads/13.2.152@{#1}
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+Cr-Branched-From: 6054ba94db0969220be4f94dc1677fc4696bdc4f-refs/heads/main@{#97085}
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+
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+diff --git a/src/objects/code.h b/src/objects/code.h
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+index a9c1b5bc007eccad8f1731810d65a3f5c51f22f2..2e24c18407577084d3f523ede0663234420db8db 100644
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+--- a/src/objects/code.h
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++++ b/src/objects/code.h
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+@@ -450,7 +450,9 @@ class Code : public ExposedTrustedObject {
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+
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+ // Reserve one argument count value as the "don't adapt arguments" sentinel.
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+ static const int kArgumentsBits = 16;
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+- static const int kMaxArguments = (1 << kArgumentsBits) - 2;
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++ // Slightly less than 2^kArgumentBits-1 to allow for extra implicit arguments
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++ // on the call nodes without overflowing the uint16_t input_count.
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++ static const int kMaxArguments = (1 << kArgumentsBits) - 10;
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+
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+ private:
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+ inline void set_instruction_start(IsolateForSandbox isolate, Address value);
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+diff --git a/test/mjsunit/mjsunit.status b/test/mjsunit/mjsunit.status
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+index 2104677a3124e0f29c04b38155bad6dd5ef51c67..d1889ce528a284cef35613f426479304d68a4f2e 100644
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+--- a/test/mjsunit/mjsunit.status
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++++ b/test/mjsunit/mjsunit.status
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+@@ -228,6 +228,10 @@
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+
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+ # TODO(v8:12783): Turboshaft instruction selection not ported to these platforms yet.
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+ 'wasm/turboshaft/instruction-selection': [PASS, ['arch in [riscv32]', SKIP]],
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++
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++ # TODO(thibaudm): Register allocation struggles with the function in this
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++ # test, which has the maximum allowed number of parameters.
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++ 'regress/regress-crbug-724153': [SLOW],
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+ }], # ALWAYS
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+
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+ ################################################################################
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+diff --git a/test/mjsunit/regress/regress-11491.js b/test/mjsunit/regress/regress-11491.js
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+index 795480a15db69b3ca30e97fc49d283546be3319e..4e188d44226341f5bba843dd10a46ff1fbaa4897 100644
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+--- a/test/mjsunit/regress/regress-11491.js
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++++ b/test/mjsunit/regress/regress-11491.js
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+@@ -4,7 +4,7 @@
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+
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+ function test() {
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+ // Create a generator constructor with the maximum number of allowed parameters.
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+- const args = new Array(65535);
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++ const args = new Array(65526);
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+ function* gen() {}
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+ const c = gen.constructor.apply(null, args);
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+
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+diff --git a/test/mjsunit/regress/regress-crbug-724153.js b/test/mjsunit/regress/regress-crbug-724153.js
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+index a571f8e0bf5e85accc53a926358e61aea6c3d981..282532e5026270334b2d2c40f77578e2596ab67c 100644
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+--- a/test/mjsunit/regress/regress-crbug-724153.js
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++++ b/test/mjsunit/regress/regress-crbug-724153.js
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+@@ -6,7 +6,7 @@
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+
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+ (function TestParameterLimit() {
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+ var src = '(function f(a,';
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+- for (var i = 0; i < 65534 - 2; i++) {
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++ for (var i = 0; i < 65525 - 2; i++) {
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+ src += 'b' + i + ',';
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+ }
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+ src += 'c) { return a + c })';
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+diff --git a/test/mjsunit/regress/regress-v8-6716.js b/test/mjsunit/regress/regress-v8-6716.js
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+index 87b72e148820e416ae698b9b414f3d5ce2b1bcb1..df8c06887720dd6694576e13d8423c8304da93f2 100644
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+--- a/test/mjsunit/regress/regress-v8-6716.js
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++++ b/test/mjsunit/regress/regress-v8-6716.js
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+@@ -3,5 +3,5 @@
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+ // found in the LICENSE file.
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+
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+ function f() {}
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+-var a = Array(2 ** 16 - 2); // Elements in large-object-space.
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++var a = Array(2 ** 16 - 10); // Elements in large-object-space.
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+ f.bind(...a);
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