/usr/src/llvm-2.9/patches/0032-x86-fast-isel-fs-load.patch is in llvm-2.9-source 2.9+dfsg-3ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | ---
lib/Target/X86/X86FastISel.cpp | 5 +++++
test/CodeGen/X86/2010-06-14-fast-isel-fs-load.ll | 6 ++++++
2 files changed, 11 insertions(+)
--- a/test/CodeGen/X86/2010-06-14-fast-isel-fs-load.ll
+++ b/test/CodeGen/X86/2010-06-14-fast-isel-fs-load.ll
@@ -0,0 +1,6 @@
+; RUN: llc -fast-isel -march=x86 < %s | grep %fs:
+
+define i32 @test1(i32 addrspace(257)* %arg) nounwind {
+ %tmp = load i32 addrspace(257)* %arg
+ ret i32 %tmp
+}
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -349,6 +349,11 @@
U = C;
}
+ if (const PointerType *Ty = dyn_cast<PointerType>(V->getType()))
+ if (Ty->getAddressSpace() > 255)
+ // Fast instruction selection doesn't support pointers through %fs or %gs
+ return false;
+
switch (Opcode) {
default: break;
case Instruction::BitCast:
|