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import CS llvm-21.1.8-2.el9

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AlmaLinux RelEng Bot 2026-03-30 10:43:32 -04:00
parent 93150799be
commit 5b46baa9ef
13 changed files with 3752 additions and 315 deletions
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4
.gitignore vendored
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@ -1,2 +1,2 @@
SOURCES/llvm-project-20.1.8.src.tar.xz
SOURCES/llvm-project-20.1.8.src.tar.xz.sig
SOURCES/llvm-project-21.1.8.src.tar.xz
SOURCES/llvm-project-21.1.8.src.tar.xz.sig

4
.llvm.metadata
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@ -1,2 +1,2 @@
f148d196711cf7cfa0850717a4fd2c4c795d9abe SOURCES/llvm-project-20.1.8.src.tar.xz
3663169aeb9c255bd11d3fa6bbb2c750b52b6fd3 SOURCES/llvm-project-20.1.8.src.tar.xz.sig
a02f43a68bf59be15a61d6ddd0d99bd4973244f4 SOURCES/llvm-project-21.1.8.src.tar.xz
c10b9d8ebce251f8be51eb71378122300fd37de3 SOURCES/llvm-project-21.1.8.src.tar.xz.sig

59
SOURCES/0001-22-polly-shared-libs.patch Normal file
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@ -0,0 +1,59 @@
From daf5077c8ce848b39239879369679c9fea7041b1 Mon Sep 17 00:00:00 2001
From: Konrad Kleine <kkleine@redhat.com>
Date: Tue, 28 Jan 2025 08:34:09 +0000
Subject: [PATCH] shared libs
---
polly/cmake/polly_macros.cmake | 5 ++++-
polly/lib/CMakeLists.txt | 1 +
polly/lib/External/CMakeLists.txt | 1 +
3 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/polly/cmake/polly_macros.cmake b/polly/cmake/polly_macros.cmake
index 9bd7b0b0ea59..fc2c3a76901f 100644
--- a/polly/cmake/polly_macros.cmake
+++ b/polly/cmake/polly_macros.cmake
@@ -1,5 +1,5 @@
macro(add_polly_library name)
- cmake_parse_arguments(ARG "" "" "" ${ARGN})
+ cmake_parse_arguments(ARG "SHARED" "" "" ${ARGN})
set(srcs ${ARG_UNPARSED_ARGUMENTS})
if(MSVC_IDE OR XCODE)
file( GLOB_RECURSE headers *.h *.td *.def)
@@ -17,6 +17,9 @@ macro(add_polly_library name)
else()
set(libkind)
endif()
+ if (ARG_SHARED)
+ set(libkind SHARED)
+ endif()
add_library( ${name} ${libkind} ${srcs} )
set_target_properties(${name} PROPERTIES FOLDER "Polly/Libraries")
diff --git a/polly/lib/CMakeLists.txt b/polly/lib/CMakeLists.txt
index 0ed673815ff3..e156dcb31655 100644
--- a/polly/lib/CMakeLists.txt
+++ b/polly/lib/CMakeLists.txt
@@ -41,6 +41,7 @@ set(POLLY_COMPONENTS
# the sources them to be recompiled for each of them.
add_llvm_pass_plugin(Polly
NO_MODULE
+ SHARED
SUBPROJECT Polly
Analysis/DependenceInfo.cpp
Analysis/ScopDetection.cpp
diff --git a/polly/lib/External/CMakeLists.txt b/polly/lib/External/CMakeLists.txt
index ab5cba93cdcf..fdfd06864bc7 100644
--- a/polly/lib/External/CMakeLists.txt
+++ b/polly/lib/External/CMakeLists.txt
@@ -284,6 +284,7 @@ if (POLLY_BUNDLED_ISL)
)
add_polly_library(PollyISL
+ SHARED
${ISL_FILES}
)
--
2.50.1

1354
SOURCES/0001-BPF-Support-Jump-Table-149715.patch Normal file
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131
SOURCES/0001-CGP-Bail-out-if-Base-Scaled-Reg-does-not-dominate-in.patch Normal file
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@ -0,0 +1,131 @@
From dde30a47313bf52fef02bbcb1de931a8d725659f Mon Sep 17 00:00:00 2001
From: Florian Hahn <flo@fhahn.com>
Date: Fri, 6 Jun 2025 12:38:30 +0100
Subject: [PATCH] [CGP] Bail out if (Base|Scaled)Reg does not dominate insert
point. (#142949)
(Base|Scaled)Reg may not dominate the chosen insert point, if there are
multiple uses of the address. Bail out if that's the case, otherwise we
will generate invalid IR.
In some cases, we could probably adjust the insert point or hoist the
(Base|Scaled)Reg.
Fixes https://github.com/llvm/llvm-project/issues/142830.
PR: https://github.com/llvm/llvm-project/pull/142949
---
llvm/lib/CodeGen/CodeGenPrepare.cpp | 13 +++-
.../X86/sink-addrmode-reg-does-not-geps.ll | 76 +++++++++++++++++++
2 files changed, 87 insertions(+), 2 deletions(-)
create mode 100644 llvm/test/Transforms/CodeGenPrepare/X86/sink-addrmode-reg-does-not-geps.ll
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp
index 822ed6283117..32348a899683 100644
--- a/llvm/lib/CodeGen/CodeGenPrepare.cpp
+++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp
@@ -5945,8 +5945,17 @@ bool CodeGenPrepare::optimizeMemoryInst(Instruction *MemoryInst, Value *Addr,
// The current BB may be optimized multiple times, we can't guarantee the
// reuse of Addr happens later, call findInsertPos to find an appropriate
// insert position.
- IRBuilder<> Builder(MemoryInst->getParent(),
- findInsertPos(Addr, MemoryInst, SunkAddr));
+ auto InsertPos = findInsertPos(Addr, MemoryInst, SunkAddr);
+
+ // TODO: Adjust insert point considering (Base|Scaled)Reg if possible.
+ if (!SunkAddr) {
+ auto &DT = getDT(*MemoryInst->getFunction());
+ if ((AddrMode.BaseReg && !DT.dominates(AddrMode.BaseReg, &*InsertPos)) ||
+ (AddrMode.ScaledReg && !DT.dominates(AddrMode.ScaledReg, &*InsertPos)))
+ return Modified;
+ }
+
+ IRBuilder<> Builder(MemoryInst->getParent(), InsertPos);
if (SunkAddr) {
LLVM_DEBUG(dbgs() << "CGP: Reusing nonlocal addrmode: " << AddrMode
diff --git a/llvm/test/Transforms/CodeGenPrepare/X86/sink-addrmode-reg-does-not-geps.ll b/llvm/test/Transforms/CodeGenPrepare/X86/sink-addrmode-reg-does-not-geps.ll
new file mode 100644
index 000000000000..1640bafbd0bf
--- /dev/null
+++ b/llvm/test/Transforms/CodeGenPrepare/X86/sink-addrmode-reg-does-not-geps.ll
@@ -0,0 +1,76 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S -passes='require<profile-summary>,function(codegenprepare)' %s | FileCheck %s
+
+target triple = "x86_64-unknown-linux"
+
+declare i1 @cond(float)
+
+define void @scaled_reg_does_not_dominate_insert_point(ptr %src) {
+; CHECK-LABEL: define void @scaled_reg_does_not_dominate_insert_point(
+; CHECK-SAME: ptr [[SRC:%.*]]) {
+; CHECK-NEXT: [[BB:.*]]:
+; CHECK-NEXT: br label %[[LOOP:.*]]
+; CHECK: [[LOOP]]:
+; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, %[[BB]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]
+; CHECK-NEXT: [[IV_NEXT]] = add i64 [[IV]], 1
+; CHECK-NEXT: [[SUNKADDR2:%.*]] = mul i64 [[IV_NEXT]], 2
+; CHECK-NEXT: [[SUNKADDR3:%.*]] = getelementptr i8, ptr [[SRC]], i64 [[SUNKADDR2]]
+; CHECK-NEXT: [[SUNKADDR4:%.*]] = getelementptr i8, ptr [[SUNKADDR3]], i64 6
+; CHECK-NEXT: [[L_0:%.*]] = load float, ptr [[SUNKADDR4]], align 4
+; CHECK-NEXT: [[SUNKADDR:%.*]] = mul i64 [[IV]], 2
+; CHECK-NEXT: [[SUNKADDR1:%.*]] = getelementptr i8, ptr [[SRC]], i64 [[SUNKADDR]]
+; CHECK-NEXT: [[L_1:%.*]] = load float, ptr [[SUNKADDR1]], align 4
+; CHECK-NEXT: [[TMP0:%.*]] = call i1 @cond(float [[L_0]])
+; CHECK-NEXT: [[C:%.*]] = call i1 @cond(float [[L_1]])
+; CHECK-NEXT: br i1 [[C]], label %[[LOOP]], label %[[EXIT:.*]]
+; CHECK: [[EXIT]]:
+; CHECK-NEXT: ret void
+;
+bb:
+ %gep.base = getelementptr i8, ptr %src, i64 8
+ br label %loop
+
+loop:
+ %iv = phi i64 [ 0, %bb ], [ %iv.next, %loop ]
+ %iv.shl = shl i64 %iv, 1
+ %gep.shl = getelementptr i8, ptr %gep.base, i64 %iv.shl
+ %gep.sub = getelementptr i8, ptr %gep.shl, i64 -8
+ %iv.next = add i64 %iv, 1
+ %l.0 = load float, ptr %gep.shl, align 4
+ %l.1 = load float, ptr %gep.sub, align 4
+ call i1 @cond(float %l.0)
+ %c = call i1 @cond(float %l.1)
+ br i1 %c, label %loop, label %exit
+
+exit:
+ ret void
+}
+
+define void @check_dt_after_modifying_cfg(ptr %dst, i64 %x, i8 %y, i8 %z) {
+; CHECK-LABEL: define void @check_dt_after_modifying_cfg(
+; CHECK-SAME: ptr [[DST:%.*]], i64 [[X:%.*]], i8 [[Y:%.*]], i8 [[Z:%.*]]) {
+; CHECK-NEXT: [[ENTRY:.*]]:
+; CHECK-NEXT: [[OFFSET:%.*]] = lshr i64 [[X]], 2
+; CHECK-NEXT: [[SEL_FROZEN:%.*]] = freeze i8 [[Z]]
+; CHECK-NEXT: [[CMP:%.*]] = icmp slt i8 [[SEL_FROZEN]], 0
+; CHECK-NEXT: br i1 [[CMP]], label %[[SELECT_END:.*]], label %[[SELECT_FALSE_SINK:.*]]
+; CHECK: [[SELECT_FALSE_SINK]]:
+; CHECK-NEXT: [[SMIN:%.*]] = tail call i8 @llvm.smin.i8(i8 [[Y]], i8 0)
+; CHECK-NEXT: br label %[[SELECT_END]]
+; CHECK: [[SELECT_END]]:
+; CHECK-NEXT: [[SEL:%.*]] = phi i8 [ 0, %[[ENTRY]] ], [ [[SMIN]], %[[SELECT_FALSE_SINK]] ]
+; CHECK-NEXT: [[SUNKADDR:%.*]] = getelementptr i8, ptr [[DST]], i64 [[OFFSET]]
+; CHECK-NEXT: store i8 [[SEL]], ptr [[SUNKADDR]], align 1
+; CHECK-NEXT: ret void
+;
+entry:
+ %offset = lshr i64 %x, 2
+ %gep.dst = getelementptr i8, ptr %dst, i64 %offset
+ %smin = tail call i8 @llvm.smin.i8(i8 %y, i8 0)
+ %cmp = icmp slt i8 %z, 0
+ %sel = select i1 %cmp, i8 0, i8 %smin
+ store i8 %sel, ptr %gep.dst, align 1
+ ret void
+}
+
+declare i8 @llvm.smin.i8(i8, i8) #0
--
2.50.1

81
SOURCES/0001-SystemZ-Fix-ICE-with-i128-i64-uaddo-carry-chain.patch
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@ -1,81 +0,0 @@
From 6d5697f7cb4e933d2f176c46b7ac05a9cbaeb8b6 Mon Sep 17 00:00:00 2001
From: Ulrich Weigand <ulrich.weigand@de.ibm.com>
Date: Thu, 23 Jan 2025 19:11:18 +0100
Subject: [PATCH] [SystemZ] Fix ICE with i128->i64 uaddo carry chain
We can only optimize a uaddo_carry via specialized instruction
if the carry was produced by another uaddo(_carry) instruction;
there is already a check for that.
However, i128 uaddo(_carry) use a completely different mechanism;
they indicate carry in a vector register instead of the CC flag.
Thus, we must also check that we don't mix those two - that check
has been missing.
Fixes: https://github.com/llvm/llvm-project/issues/124001
---
.../Target/SystemZ/SystemZISelLowering.cpp | 12 ++++++----
llvm/test/CodeGen/SystemZ/pr124001.ll | 23 +++++++++++++++++++
2 files changed, 31 insertions(+), 4 deletions(-)
create mode 100644 llvm/test/CodeGen/SystemZ/pr124001.ll
diff --git a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
index 4040ab6d4510..1fb31c26e20d 100644
--- a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -4708,15 +4708,19 @@ SDValue SystemZTargetLowering::lowerXALUO(SDValue Op,
}
static bool isAddCarryChain(SDValue Carry) {
- while (Carry.getOpcode() == ISD::UADDO_CARRY)
+ while (Carry.getOpcode() == ISD::UADDO_CARRY &&
+ Carry->getValueType(0) != MVT::i128)
Carry = Carry.getOperand(2);
- return Carry.getOpcode() == ISD::UADDO;
+ return Carry.getOpcode() == ISD::UADDO &&
+ Carry->getValueType(0) != MVT::i128;
}
static bool isSubBorrowChain(SDValue Carry) {
- while (Carry.getOpcode() == ISD::USUBO_CARRY)
+ while (Carry.getOpcode() == ISD::USUBO_CARRY &&
+ Carry->getValueType(0) != MVT::i128)
Carry = Carry.getOperand(2);
- return Carry.getOpcode() == ISD::USUBO;
+ return Carry.getOpcode() == ISD::USUBO &&
+ Carry->getValueType(0) != MVT::i128;
}
// Lower UADDO_CARRY/USUBO_CARRY nodes.
diff --git a/llvm/test/CodeGen/SystemZ/pr124001.ll b/llvm/test/CodeGen/SystemZ/pr124001.ll
new file mode 100644
index 000000000000..9cf630a55dd6
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/pr124001.ll
@@ -0,0 +1,23 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
+
+define i64 @test(i128 %in) {
+; CHECK-LABEL: test:
+; CHECK: # %bb.0:
+; CHECK-NEXT: larl %r1, .LCPI0_0
+; CHECK-NEXT: vl %v0, 0(%r2), 3
+; CHECK-NEXT: vl %v1, 0(%r1), 3
+; CHECK-NEXT: vaccq %v0, %v0, %v1
+; CHECK-NEXT: vlgvg %r1, %v0, 1
+; CHECK-NEXT: la %r2, 1(%r1)
+; CHECK-NEXT: br %r14
+ %1 = tail call { i128, i1 } @llvm.uadd.with.overflow.i128(i128 %in, i128 1)
+ %2 = extractvalue { i128, i1 } %1, 1
+ %3 = zext i1 %2 to i64
+ %4 = add i64 %3, 1
+ ret i64 %4
+}
+
+declare { i128, i1 } @llvm.uadd.with.overflow.i128(i128, i128) #0
+
+attributes #0 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
--
2.48.1

27
SOURCES/0001-clang-Add-a-hack-to-fix-the-offload-build-with-the-m.patch Normal file
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@ -0,0 +1,27 @@
From f028fc042ef2875a13c6abf3828626a313e4a8e6 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar@redhat.com>
Date: Fri, 1 Aug 2025 15:38:22 +0000
Subject: [PATCH] clang: Add a hack to fix the offload build with the
mtls-dialect option
---
clang/lib/Driver/ToolChains/CommonArgs.cpp | 3 +++
1 file changed, 3 insertions(+)
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 097d186ad8ea..0dc9e60f8428 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -920,6 +920,9 @@ bool tools::isTLSDESCEnabled(const ToolChain &TC,
} else if (Triple.isX86()) {
SupportedArgument = V == "gnu" || V == "gnu2";
EnableTLSDESC = V == "gnu2";
+ } else if( Triple.isGPU()) {
+ // HACK To fix the offload build.
+ return false;
} else {
Unsupported = true;
}
--
2.49.0

29
SOURCES/0001-lld-Adjust-compressed-debug-level-test-for-s390x-wit.patch Normal file
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@ -0,0 +1,29 @@
From 4fbbdb4f6b95158b87e1b072b3a246722ccf3b7d Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov@redhat.com>
Date: Fri, 19 Dec 2025 17:02:24 +0100
Subject: [PATCH] [lld] Adjust compressed-debug-level test for s390x with
DFLTCC (#172972)
After enabling DFLTCC in zlib-ng for s390x this test starts failing,
because slightly better compression is produced at level 1. Add 1c as a
permissible output.
---
lld/test/ELF/compressed-debug-level.test | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lld/test/ELF/compressed-debug-level.test b/lld/test/ELF/compressed-debug-level.test
index 5a4d37e31eca..7d64298e518f 100644
--- a/lld/test/ELF/compressed-debug-level.test
+++ b/lld/test/ELF/compressed-debug-level.test
@@ -18,7 +18,7 @@
# RUN: llvm-readelf --sections %t.6 | FileCheck -check-prefixes=HEADER,LEVEL6 %s
# HEADER: [Nr] Name Type Address Off Size
-# LEVEL1: [ 1] .debug_info PROGBITS 00000000 000094 0000{{1[def]|21}}
+# LEVEL1: [ 1] .debug_info PROGBITS 00000000 000094 0000{{1[cdef]|21}}
# LEVEL6: [ 1] .debug_info PROGBITS 00000000 000094 00001{{[abc]}}
## A little arbitrary debug section which has a different size after
--
2.50.1

130
SOURCES/0002-BPF-Remove-unused-weak-symbol-__bpf_trap-166003.patch Normal file
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@ -0,0 +1,130 @@
From be4fa19ecf95d94d3ef46be183d3d4b4ebb6bb47 Mon Sep 17 00:00:00 2001
From: yonghong-song <yhs@fb.com>
Date: Mon, 3 Nov 2025 11:11:47 -0800
Subject: [PATCH] [BPF] Remove unused weak symbol __bpf_trap (#166003)
Nikita Popov reported an issue ([1]) where a dangling weak symbol
__bpf_trap is in the final binary and this caused libbpf failing like
below:
$ veristat -v ./t.o
Processing 't.o'...
libbpf: elf: skipping unrecognized data section(4) .eh_frame
libbpf: elf: skipping relo section(5) .rel.eh_frame for section(4) .eh_frame
libbpf: failed to find BTF for extern '__bpf_trap': -3
Failed to open './t.o': -3
In llvm, the dag selection phase generates __bpf_trap in code. Later the
UnreachableBlockElim pass removed __bpf_trap from the code, but
__bpf_trap symbol survives in the symbol table.
Having a dangling __bpf_trap weak symbol is not good for old kernels as
seen in the above veristat failure. Although users could use compiler
flag `-mllvm -bpf-disable-trap-unreachable` to workaround the issue,
this patch fixed the issue by removing the dangling __bpf_trap.
[1] https://github.com/llvm/llvm-project/issues/165696
(cherry picked from commit 8fd1bf2f8c9e6e7c4bc5f6915a9d52bb3672601b)
---
llvm/lib/Target/BPF/BPFAsmPrinter.cpp | 24 ++++++++++++++++++++
llvm/lib/Target/BPF/BPFAsmPrinter.h | 1 +
llvm/test/CodeGen/BPF/bpf_trap.ll | 32 +++++++++++++++++++++++++++
3 files changed, 57 insertions(+)
create mode 100644 llvm/test/CodeGen/BPF/bpf_trap.ll
diff --git a/llvm/lib/Target/BPF/BPFAsmPrinter.cpp b/llvm/lib/Target/BPF/BPFAsmPrinter.cpp
index 77dc4a75a7d6..b2a82040ee82 100644
--- a/llvm/lib/Target/BPF/BPFAsmPrinter.cpp
+++ b/llvm/lib/Target/BPF/BPFAsmPrinter.cpp
@@ -88,6 +88,16 @@ bool BPFAsmPrinter::doFinalization(Module &M) {
}
}
+ for (GlobalObject &GO : M.global_objects()) {
+ if (!GO.hasExternalWeakLinkage())
+ continue;
+
+ if (!SawTrapCall && GO.getName() == BPF_TRAP) {
+ GO.eraseFromParent();
+ break;
+ }
+ }
+
return AsmPrinter::doFinalization(M);
}
@@ -160,6 +170,20 @@ bool BPFAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
}
void BPFAsmPrinter::emitInstruction(const MachineInstr *MI) {
+ if (MI->isCall()) {
+ for (const MachineOperand &Op : MI->operands()) {
+ if (Op.isGlobal()) {
+ if (const GlobalValue *GV = Op.getGlobal())
+ if (GV->getName() == BPF_TRAP)
+ SawTrapCall = true;
+ } else if (Op.isSymbol()) {
+ if (const MCSymbol *Sym = Op.getMCSymbol())
+ if (Sym->getName() == BPF_TRAP)
+ SawTrapCall = true;
+ }
+ }
+ }
+
BPF_MC::verifyInstructionPredicates(MI->getOpcode(),
getSubtargetInfo().getFeatureBits());
diff --git a/llvm/lib/Target/BPF/BPFAsmPrinter.h b/llvm/lib/Target/BPF/BPFAsmPrinter.h
index 0cfb2839c8ff..60a285ea2b7d 100644
--- a/llvm/lib/Target/BPF/BPFAsmPrinter.h
+++ b/llvm/lib/Target/BPF/BPFAsmPrinter.h
@@ -39,6 +39,7 @@ public:
private:
BTFDebug *BTF;
TargetMachine &TM;
+ bool SawTrapCall = false;
const BPFTargetMachine &getBTM() const;
};
diff --git a/llvm/test/CodeGen/BPF/bpf_trap.ll b/llvm/test/CodeGen/BPF/bpf_trap.ll
new file mode 100644
index 000000000000..ab8df5ff7cb0
--- /dev/null
+++ b/llvm/test/CodeGen/BPF/bpf_trap.ll
@@ -0,0 +1,32 @@
+; RUN: llc < %s | FileCheck %s
+;
+target triple = "bpf"
+
+define i32 @test(i8 %x) {
+entry:
+ %0 = and i8 %x, 3
+ switch i8 %0, label %default.unreachable4 [
+ i8 0, label %return
+ i8 1, label %sw.bb1
+ i8 2, label %sw.bb2
+ i8 3, label %sw.bb3
+ ]
+
+sw.bb1: ; preds = %entry
+ br label %return
+
+sw.bb2: ; preds = %entry
+ br label %return
+
+sw.bb3: ; preds = %entry
+ br label %return
+
+default.unreachable4: ; preds = %entry
+ unreachable
+
+return: ; preds = %entry, %sw.bb3, %sw.bb2, %sw.bb1
+ %retval.0 = phi i32 [ 12, %sw.bb1 ], [ 43, %sw.bb2 ], [ 54, %sw.bb3 ], [ 32, %entry ]
+ ret i32 %retval.0
+}
+
+; CHECK-NOT: __bpf_trap
--
2.50.1

34
SOURCES/0003-BPF-Remove-dead-code-related-to-__bpf_trap-global-va.patch Normal file
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@ -0,0 +1,34 @@
From ac5b6151976c70c8b676d3bc6ff82895fe0e1d01 Mon Sep 17 00:00:00 2001
From: yonghong-song <yhs@fb.com>
Date: Tue, 4 Nov 2025 15:15:33 -0800
Subject: [PATCH] [BPF] Remove dead code related to __bpf_trap global var
(#166440)
In [1], the symbol __bpf_trap (macro BPF_TRAP) is removed if it is not
used in the code. In the discussion in [1], it is found that the branch
"if (Op.isSymbol())" is actually always false. Remove it to avoid
confusion.
[1] https://github.com/llvm/llvm-project/pull/166003
---
llvm/lib/Target/BPF/BPFAsmPrinter.cpp | 4 ----
1 file changed, 4 deletions(-)
diff --git a/llvm/lib/Target/BPF/BPFAsmPrinter.cpp b/llvm/lib/Target/BPF/BPFAsmPrinter.cpp
index 378a72ab27dd..abe081c0c76f 100644
--- a/llvm/lib/Target/BPF/BPFAsmPrinter.cpp
+++ b/llvm/lib/Target/BPF/BPFAsmPrinter.cpp
@@ -176,10 +176,6 @@ void BPFAsmPrinter::emitInstruction(const MachineInstr *MI) {
if (const GlobalValue *GV = Op.getGlobal())
if (GV->getName() == BPF_TRAP)
SawTrapCall = true;
- } else if (Op.isSymbol()) {
- if (const MCSymbol *Sym = Op.getMCSymbol())
- if (Sym->getName() == BPF_TRAP)
- SawTrapCall = true;
}
}
}
--
2.50.1

1013
SOURCES/changelog Normal file
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26
SOURCES/release-keys.asc
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1175
SPECS/llvm.spec
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