Use the new IsAligned fixup flag to improve fixup encodings for Thumb2 branches. This is still not perfect,
but it gets many more of them correct than it did previously.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121414 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMAsmBackend.cpp b/lib/Target/ARM/ARMAsmBackend.cpp
index 606437e..7311b41 100644
--- a/lib/Target/ARM/ARMAsmBackend.cpp
+++ b/lib/Target/ARM/ARMAsmBackend.cpp
@@ -101,6 +101,7 @@
case ARM::fixup_arm_ldst_pcrel_12:
// ARM PC-relative values are offset by 8.
Value -= 4;
+ // FALLTHROUGH
case ARM::fixup_t2_ldst_pcrel_12: {
// Offset by 4, adjusted by two due to the half-word ordering of thumb.
Value -= 4;
@@ -140,7 +141,7 @@
// Offset by 8 just as above.
return 0xffffff & ((Value - 8) >> 2);
case ARM::fixup_t2_branch: {
- Value = Value - 8;
+ Value = Value - 6;
Value >>= 1; // Low bit is not encoded.
uint64_t out = 0;