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-rw-r--r--src/jit/codegenarmarch.cpp4
-rw-r--r--src/jit/emit.h2
-rw-r--r--src/jit/emitarm.cpp25
-rw-r--r--src/jit/emitarm64.cpp5
-rw-r--r--src/jit/emitxarch.cpp4
-rw-r--r--src/jit/unwind.h4
6 files changed, 34 insertions, 10 deletions
diff --git a/src/jit/codegenarmarch.cpp b/src/jit/codegenarmarch.cpp
index 55b3f0a7ba..add7b9867d 100644
--- a/src/jit/codegenarmarch.cpp
+++ b/src/jit/codegenarmarch.cpp
@@ -3849,7 +3849,9 @@ void CodeGen::genAllocLclFrame(unsigned frameSize, regNumber initReg, bool* pIni
// Generate:
//
- // mov rOffset, -pageSize
+ // mov rOffset, -pageSize // On arm, this turns out to be "movw r1, 0xf000; sxth r1, r1".
+ // // We could save 4 bytes in the prolog by using "movs r1, 0" at the
+ // // runtime expense of running a useless first loop iteration.
// mov rLimit, -frameSize
// loop:
// ldr rTemp, [sp + rOffset] // rTemp = wzr on ARM64
diff --git a/src/jit/emit.h b/src/jit/emit.h
index 1308531a90..b429920c38 100644
--- a/src/jit/emit.h
+++ b/src/jit/emit.h
@@ -1374,7 +1374,7 @@ protected:
void emitDispClsVar(CORINFO_FIELD_HANDLE fldHnd, ssize_t offs, bool reloc = false);
void emitDispFrameRef(int varx, int disp, int offs, bool asmfm);
void emitDispInsOffs(unsigned offs, bool doffs);
- void emitDispInsHex(BYTE* code, size_t sz);
+ void emitDispInsHex(instrDesc* id, BYTE* code, size_t sz);
#else // !DEBUG
#define emitVarRefOffs 0
diff --git a/src/jit/emitarm.cpp b/src/jit/emitarm.cpp
index 3d7089bb8a..9e36efb4df 100644
--- a/src/jit/emitarm.cpp
+++ b/src/jit/emitarm.cpp
@@ -6778,7 +6778,7 @@ void emitter::emitDispGC(emitAttr attr)
* Display (optionally) the instruction encoding in hex
*/
-void emitter::emitDispInsHex(BYTE* code, size_t sz)
+void emitter::emitDispInsHex(instrDesc* id, BYTE* code, size_t sz)
{
// We do not display the instruction hex if we want diff-able disassembly
if (!emitComp->opts.disDiffable)
@@ -6791,6 +6791,27 @@ void emitter::emitDispInsHex(BYTE* code, size_t sz)
{
printf(" %04X %04X", (*((unsigned short*)(code + 0))), (*((unsigned short*)(code + 2))));
}
+ else
+ {
+ assert(sz == 0);
+
+ // At least display the encoding size of the instruction, even if not displaying its actual encoding.
+ insSize isz = emitInsSize(id->idInsFmt());
+ switch (isz)
+ {
+ case ISZ_16BIT:
+ printf(" 2B");
+ break;
+ case ISZ_32BIT:
+ printf(" 4B");
+ break;
+ case ISZ_48BIT:
+ printf(" 6B");
+ break;
+ default:
+ unreached();
+ }
+ }
}
}
@@ -6822,7 +6843,7 @@ void emitter::emitDispInsHelp(
/* Display the instruction hex code */
- emitDispInsHex(code, sz);
+ emitDispInsHex(id, code, sz);
printf(" ");
diff --git a/src/jit/emitarm64.cpp b/src/jit/emitarm64.cpp
index afd5cf44e2..0345a361c8 100644
--- a/src/jit/emitarm64.cpp
+++ b/src/jit/emitarm64.cpp
@@ -10698,7 +10698,7 @@ void emitter::emitDispAddrRRExt(regNumber reg1, regNumber reg2, insOpts opt, boo
* Display (optionally) the instruction encoding in hex
*/
-void emitter::emitDispInsHex(BYTE* code, size_t sz)
+void emitter::emitDispInsHex(instrDesc* id, BYTE* code, size_t sz)
{
// We do not display the instruction hex if we want diff-able disassembly
if (!emitComp->opts.disDiffable)
@@ -10709,6 +10709,7 @@ void emitter::emitDispInsHex(BYTE* code, size_t sz)
}
else
{
+ assert(sz == 0);
printf(" ");
}
}
@@ -10742,7 +10743,7 @@ void emitter::emitDispIns(
/* Display the instruction hex code */
- emitDispInsHex(pCode, sz);
+ emitDispInsHex(id, pCode, sz);
printf(" ");
diff --git a/src/jit/emitxarch.cpp b/src/jit/emitxarch.cpp
index 6052b97493..f7b3c5baa4 100644
--- a/src/jit/emitxarch.cpp
+++ b/src/jit/emitxarch.cpp
@@ -8049,7 +8049,7 @@ void emitter::emitDispShift(instruction ins, int cnt)
* Display (optionally) the bytes for the instruction encoding in hex
*/
-void emitter::emitDispInsHex(BYTE* code, size_t sz)
+void emitter::emitDispInsHex(instrDesc* id, BYTE* code, size_t sz)
{
// We do not display the instruction hex if we want diff-able disassembly
if (!emitComp->opts.disDiffable)
@@ -8216,7 +8216,7 @@ void emitter::emitDispIns(
{
/* Display the instruction hex code */
- emitDispInsHex(code, sz);
+ emitDispInsHex(id, code, sz);
}
/* Display the instruction name */
diff --git a/src/jit/unwind.h b/src/jit/unwind.h
index a78df32f1f..06396f2a9a 100644
--- a/src/jit/unwind.h
+++ b/src/jit/unwind.h
@@ -20,8 +20,8 @@ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// You can increase this "max" number if necessary.
#if defined(_TARGET_ARM_)
-const unsigned MAX_PROLOG_SIZE_BYTES = 40;
-const unsigned MAX_EPILOG_SIZE_BYTES = 40;
+const unsigned MAX_PROLOG_SIZE_BYTES = 44;
+const unsigned MAX_EPILOG_SIZE_BYTES = 44;
#define UWC_END 0xFF // "end" unwind code
#define UW_MAX_FRAGMENT_SIZE_BYTES (1U << 19)
#define UW_MAX_CODE_WORDS_COUNT 15 // Max number that can be encoded in the "Code Words" field of the .pdata record