From fc76d540a076e44bd95af939e0675b0a44acf3c0 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Tue, 27 May 2014 15:25:34 +0200
Subject: [PATCH 1/2] x86: Fix code generation for unused result of
 math.random().

---
 src/lj_asm_x86.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lj_asm_x86.h b/src/lj_asm_x86.h
index fda911e5..40f95636 100644
--- a/src/lj_asm_x86.h
+++ b/src/lj_asm_x86.h
@@ -571,7 +571,7 @@ static void asm_setupresult(ASMState *as, IRIns *ir, const CCallInfo *ci)
       lua_assert(!irt_ispri(ir->t));
       ra_destreg(as, ir, RID_RET);
     }
-  } else if (LJ_32 && irt_isfp(ir->t)) {
+  } else if (LJ_32 && irt_isfp(ir->t) && !(ci->flags & CCI_CASTU64)) {
     emit_x87op(as, XI_FPOP);  /* Pop unused result from x87 st0. */
   }
 }

From 49d3157e146bc33b5b7c3a82ce00a8f824f6fa49 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Tue, 27 May 2014 15:58:04 +0200
Subject: [PATCH 2/2] PPC: Fix red zone overflow in machine code generation.

---
 src/lj_asm_ppc.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lj_asm_ppc.h b/src/lj_asm_ppc.h
index e1a496a7..0a3d35e9 100644
--- a/src/lj_asm_ppc.h
+++ b/src/lj_asm_ppc.h
@@ -49,6 +49,8 @@ static void asm_exitstub_setup(ASMState *as, ExitNo nexits)
 {
   ExitNo i;
   MCode *mxp = as->mctop;
+  if (mxp - (nexits + 3 + MCLIM_REDZONE) < as->mclim)
+    asm_mclimit(as);
   /* 1: mflr r0; bl ->vm_exit_handler; li r0, traceno; bl <1; bl <1; ... */
   for (i = nexits-1; (int32_t)i >= 0; i--)
     *--mxp = PPCI_BL|(((-3-i)&0x00ffffffu)<<2);