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Add a comment.
author
Bill Wendling
<isanbard@gmail.com>
Tue, 6 Dec 2011 01:57:48 +0000
(
01:57
+0000)
committer
Bill Wendling
<isanbard@gmail.com>
Tue, 6 Dec 2011 01:57:48 +0000
(
01:57
+0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145896
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/Target/X86/X86FrameLowering.cpp
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diff --git
a/lib/Target/X86/X86FrameLowering.cpp
b/lib/Target/X86/X86FrameLowering.cpp
index 038ca7f34d03293aba23e09e6788f8fafb40a59b..7f3c13391d3ee345bd8e3327a9499aae992052bb 100644
(file)
--- a/
lib/Target/X86/X86FrameLowering.cpp
+++ b/
lib/Target/X86/X86FrameLowering.cpp
@@
-456,6
+456,9
@@
static uint32_t encodeCompactUnwindRegistersWithFrame(unsigned SavedRegs[6],
int CURegNum = getCompactUnwindRegNum(CURegs, Reg);
if (CURegNum == -1)
return ~0U;
+
+ // Encode the 3-bit register number in order, skipping over 3-bits for each
+ // register.
RegEnc |= (CURegNum & 0x7) << ((5 - I) * 3);
}