https://llvm.org/bugs/show_bug.cgi?id=29201
Bug ID: 29201
Summary: Regression on ARM
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: Backend: ARM
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 17070
--> https://llvm.org/bugs/attachment.cgi?id=17070&action=edit
Ugly but small C sample for "out of range" regression
This checkin:
Revision: 6e45500a57ff3b4a49ef72dbdd85c0d4003375df
Author: Prakhar Bahuguna <[email protected]>
Date: 8/16/2016 3:41:52 AM
Message:
[Thumb] Validate branch target for CBZ/CBNZ instructions.
has apparently caused a regression. After applying (just) this change, this
compile command:
/llvm.trunkb/bin/clang.exe -target armv7-windows-gnu -c -o dmisc2.o dmisc2.c
gives this message:
fatal error: error in backend: out of range pc-relative fixup value
Attached is an (ugly but small) example that is giving me the error. If I
compile this C code to assembly (-S) then compile the assembly, I see:
dmisc2.s:40:2: error: out of range pc-relative fixup value
cbz r0, .LBB0_7
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