From 58916b5e2c367ae7cd1d6e2b5235656cfcfb28a5 Mon Sep 17 00:00:00 2001
From: noword <noword.forever@gmail.com>
Date: Sat, 4 Mar 2017 10:28:45 +0800
Subject: [PATCH] ARM64(llvm): Disable range checking on instructions with a
PC-relative offset (b/bl/cbz/cbnz/tbz/tbnz/ldr/ldrsw/prfm)
---
.../Target/AArch64/AsmParser/AArch64AsmParser.cpp | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
index f96b913..7dbc71b 100644
--- a/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
+++ b/llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
@@ -768,9 +768,7 @@ public:
if (!MCE)
return true;
int64_t Val = MCE->getValue();
- if (Val & 0x3)
- return false;
- return (Val >= -(0x2000000 << 2) && Val <= (0x1ffffff << 2));
+ return ((Val & 0x3) == 0);
}
bool isPCRelLabel19() const {
if (!isImm())
@@ -779,9 +777,7 @@ public:
if (!MCE)
return true;
int64_t Val = MCE->getValue();
- if (Val & 0x3)
- return false;
- return (Val >= -(0x40000 << 2) && Val <= (0x3ffff << 2));
+ return ((Val & 0x3) == 0);
}
bool isBranchTarget14() const {
if (!isImm())
@@ -790,9 +786,7 @@ public:
if (!MCE)
return true;
int64_t Val = MCE->getValue();
- if (Val & 0x3)
- return false;
- return (Val >= -(0x2000 << 2) && Val <= (0x1fff << 2));
+ return ((Val & 0x3) == 0);
}
bool
--
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