tor-browser

commit 7cf2d8c07945c3a00a8a750edb80dab0829584d7
parent f48d83b15cd232b087d0ef5b35af65dbe3593659
Author: André Bargull <andre.bargull@gmail.com>
Date:   Thu, 23 Oct 2025 11:39:52 +0000

Bug 1995594 - Part 2: Rename register names to match N64. r=spidermonkey-reviewers,jandem

`ta{0..3}` are defined as aliases for `a{4..7}` in the N64 ABI, so we could
keep these aliases if we want to.

Differential Revision: https://phabricator.services.mozilla.com/D269434

Diffstat:
M
js/src/jit/mips-shared/Architecture-mips-shared.h
 | 
6
+++---
M
js/src/jit/mips-shared/Assembler-mips-shared.h
 | 
12
++++--------
M
js/src/jit/mips64/Assembler-mips64.h
 | 
2
+-

3 files changed, 8 insertions(+), 12 deletions(-)
diff --git a/js/src/jit/mips-shared/Architecture-mips-shared.h b/js/src/jit/mips-shared/Architecture-mips-shared.h
@@ -140,9 +140,9 @@ class Registers {
   static const SetType VolatileMask =
       (1 << Registers::v0) | (1 << Registers::v1) | (1 << Registers::a0) |
       (1 << Registers::a1) | (1 << Registers::a2) | (1 << Registers::a3) |
-      (1 << Registers::t0) | (1 << Registers::t1) | (1 << Registers::t2) |
-      (1 << Registers::t3) | (1 << Registers::ta0) | (1 << Registers::ta1) |
-      (1 << Registers::ta2) | (1 << Registers::ta3) | (1 << Registers::t8) |
+      (1 << Registers::a4) | (1 << Registers::a5) | (1 << Registers::a6) |
+      (1 << Registers::a7) | (1 << Registers::t0) | (1 << Registers::t1) |
+      (1 << Registers::t2) | (1 << Registers::t3) | (1 << Registers::t8) |
       (1 << Registers::t9);
 
   // We use this constant to save registers when entering functions. This
diff --git a/js/src/jit/mips-shared/Assembler-mips-shared.h b/js/src/jit/mips-shared/Assembler-mips-shared.h
@@ -30,18 +30,14 @@ static constexpr Register a0{Registers::a0};
 static constexpr Register a1{Registers::a1};
 static constexpr Register a2{Registers::a2};
 static constexpr Register a3{Registers::a3};
-static constexpr Register a4{Registers::ta0};
-static constexpr Register a5{Registers::ta1};
-static constexpr Register a6{Registers::ta2};
-static constexpr Register a7{Registers::ta3};
+static constexpr Register a4{Registers::a4};
+static constexpr Register a5{Registers::a5};
+static constexpr Register a6{Registers::a6};
+static constexpr Register a7{Registers::a7};
 static constexpr Register t0{Registers::t0};
 static constexpr Register t1{Registers::t1};
 static constexpr Register t2{Registers::t2};
 static constexpr Register t3{Registers::t3};
-static constexpr Register t4{Registers::ta0};
-static constexpr Register t5{Registers::ta1};
-static constexpr Register t6{Registers::ta2};
-static constexpr Register t7{Registers::ta3};
 static constexpr Register s0{Registers::s0};
 static constexpr Register s1{Registers::s1};
 static constexpr Register s2{Registers::s2};
diff --git a/js/src/jit/mips64/Assembler-mips64.h b/js/src/jit/mips64/Assembler-mips64.h
@@ -84,7 +84,7 @@ static constexpr Register WasmTailCallFPScratchReg = ABINonArgReg3;
 // It must be a volatile register.
 static constexpr Register WasmJitEntryReturnScratch = t1;
 
-static constexpr Register InterpreterPCReg = t5;
+static constexpr Register InterpreterPCReg = a5;
 
 static constexpr Register JSReturnReg = v1;
 static constexpr Register JSReturnReg_Type = JSReturnReg;