[llvm] [PowerPC] Do not merge TLS constants within PPCMergeStringPool.cpp (PR #94059)
Amy Kwan via llvm-commits
llvm-commits at lists.llvm.org
Tue Jun 11 21:46:19 PDT 2024
https://github.com/amy-kwan updated https://github.com/llvm/llvm-project/pull/94059
>From 5d63733d2266abe38ee57744e263f5ea2ddb7768 Mon Sep 17 00:00:00 2001
From: Amy Kwan <amy.kwan1 at ibm.com>
Date: Fri, 31 May 2024 17:17:07 -0500
Subject: [PATCH 1/3] [PowerPC] Do not merge TLS constants within
PPCMergeStringPool.cpp
This patch prevents thread-local constants to be merged within PPCMergeStringPool.cpp.
The PPCMergeStringPool pass primarily merges non-thread-local constants
together, and thread-local constants should not be mixed together with other
(non-thread-local) constants. In the event that thread-local and other
non-thread-local constants are pooled together, the llvm.threadlocal.address
intrinsic can fail as it expects its argument to be a thread-local global value,
but the merged string structure created by the PPCMergeStringPool pass is not
thread-local as a whole.
---
.../lib/Target/PowerPC/PPCMergeStringPool.cpp | 5 +
.../PowerPC/mergeable-string-pool-tls.ll | 260 ++++++++++++++++++
2 files changed, 265 insertions(+)
create mode 100644 llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll
diff --git a/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp b/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp
index 309938accdf4c..dc7d2910aaa7e 100644
--- a/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp
+++ b/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp
@@ -215,6 +215,11 @@ void PPCMergeStringPool::collectCandidateConstants(Module &M) {
Global.getLinkage() != GlobalValue::InternalLinkage)
continue;
+ // Do not pool thread-local constants, as the pooled strings can contain
+ // non-thread-local constants, and these should not be mixed together.
+ if (Global.isThreadLocal())
+ continue;
+
LLVM_DEBUG(dbgs() << "Constant data of Global: ");
LLVM_DEBUG(ConstData->dump());
LLVM_DEBUG(dbgs() << "\n\n");
diff --git a/llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll b/llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll
new file mode 100644
index 0000000000000..3abe148dbb00d
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll
@@ -0,0 +1,260 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff -mcpu=pwr8 \
+; RUN: -ppc-asm-full-reg-names < %s | FileCheck %s \
+; RUN: --check-prefix=CHECK64
+; RUN: llc -verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr8 \
+; RUN: -ppc-asm-full-reg-names < %s | FileCheck %s \
+; RUN: --check-prefix=CHECK32
+; RUN: llc -verify-machineinstrs -mtriple powerpc64le-unknown-linux -mcpu=pwr8 \
+; RUN: -ppc-asm-full-reg-names < %s | FileCheck %s \
+; RUN: --check-prefix=LINUX64LE
+; RUN: llc -verify-machineinstrs -mtriple powerpc64-unknown-linux -mcpu=pwr8 \
+; RUN: -ppc-asm-full-reg-names < %s | FileCheck %s \
+; RUN: --check-prefix=LINUX64BE
+
+ at .str = private unnamed_addr constant [47 x i8] c"TLS variable 1, 2 and non-TLS var: %s, %s, %s\0A\00", align 1
+ at a = internal thread_local constant [5 x i8] c"tls1\00", align 1
+ at b = internal thread_local constant [5 x i8] c"tls2\00", align 1
+ at c = internal constant [15 x i8] c"Regular global\00", align 1
+ at d = internal constant [10 x i32] [i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10], align 4
+ at e = internal constant [4 x float] [float 0x4055F33340000000, float 0x4056333340000000, float 0x40567999A0000000, float 0x4056B33340000000], align 4
+
+declare noundef signext i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #0
+declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #1
+declare void @callee(ptr noundef) local_unnamed_addr #3
+declare void @callee2(ptr noundef) local_unnamed_addr #3
+
+define void @print_tls_func() {
+; CHECK64-LABEL: print_tls_func:
+; CHECK64: # %bb.0: # %entry
+; CHECK64-NEXT: mflr r0
+; CHECK64-NEXT: stdu r1, -112(r1)
+; CHECK64-NEXT: ld r3, L..C0(r2) # target-flags(ppc-tlsldm) @"_$TLSML"
+; CHECK64-NEXT: std r0, 128(r1)
+; CHECK64-NEXT: ld r6, L..C1(r2) # @__ModuleStringPool
+; CHECK64-NEXT: bla .__tls_get_mod[PR]
+; CHECK64-NEXT: ld r4, L..C2(r2) # target-flags(ppc-tlsld) @a
+; CHECK64-NEXT: ld r5, L..C3(r2) # target-flags(ppc-tlsld) @b
+; CHECK64-NEXT: add r4, r3, r4
+; CHECK64-NEXT: add r5, r3, r5
+; CHECK64-NEXT: addi r3, r6, 71
+; CHECK64-NEXT: addi r6, r6, 56
+; CHECK64-NEXT: bl .printf[PR]
+; CHECK64-NEXT: nop
+; CHECK64-NEXT: addi r1, r1, 112
+; CHECK64-NEXT: ld r0, 16(r1)
+; CHECK64-NEXT: mtlr r0
+; CHECK64-NEXT: blr
+;
+; CHECK32-LABEL: print_tls_func:
+; CHECK32: # %bb.0: # %entry
+; CHECK32-NEXT: mflr r0
+; CHECK32-NEXT: stwu r1, -64(r1)
+; CHECK32-NEXT: lwz r3, L..C0(r2) # target-flags(ppc-tlsldm) @"_$TLSML"
+; CHECK32-NEXT: stw r0, 72(r1)
+; CHECK32-NEXT: lwz r6, L..C1(r2) # @__ModuleStringPool
+; CHECK32-NEXT: bla .__tls_get_mod[PR]
+; CHECK32-NEXT: lwz r4, L..C2(r2) # target-flags(ppc-tlsld) @a
+; CHECK32-NEXT: lwz r5, L..C3(r2) # target-flags(ppc-tlsld) @b
+; CHECK32-NEXT: add r4, r3, r4
+; CHECK32-NEXT: add r5, r3, r5
+; CHECK32-NEXT: addi r3, r6, 71
+; CHECK32-NEXT: addi r6, r6, 56
+; CHECK32-NEXT: bl .printf[PR]
+; CHECK32-NEXT: nop
+; CHECK32-NEXT: addi r1, r1, 64
+; CHECK32-NEXT: lwz r0, 8(r1)
+; CHECK32-NEXT: mtlr r0
+; CHECK32-NEXT: blr
+;
+; LINUX64LE-LABEL: print_tls_func:
+; LINUX64LE: # %bb.0: # %entry
+; LINUX64LE-NEXT: mflr r0
+; LINUX64LE-NEXT: stdu r1, -96(r1)
+; LINUX64LE-NEXT: std r0, 112(r1)
+; LINUX64LE-NEXT: .cfi_def_cfa_offset 96
+; LINUX64LE-NEXT: .cfi_offset lr, 16
+; LINUX64LE-NEXT: addis r3, r13, a at tprel@ha
+; LINUX64LE-NEXT: addi r4, r3, a at tprel@l
+; LINUX64LE-NEXT: addis r3, r13, b at tprel@ha
+; LINUX64LE-NEXT: addi r5, r3, b at tprel@l
+; LINUX64LE-NEXT: addis r3, r2, .L__ModuleStringPool at toc@ha
+; LINUX64LE-NEXT: addi r6, r3, .L__ModuleStringPool at toc@l
+; LINUX64LE-NEXT: addi r3, r6, 71
+; LINUX64LE-NEXT: addi r6, r6, 56
+; LINUX64LE-NEXT: bl printf
+; LINUX64LE-NEXT: nop
+; LINUX64LE-NEXT: addi r1, r1, 96
+; LINUX64LE-NEXT: ld r0, 16(r1)
+; LINUX64LE-NEXT: mtlr r0
+; LINUX64LE-NEXT: blr
+;
+; LINUX64BE-LABEL: print_tls_func:
+; LINUX64BE: # %bb.0: # %entry
+; LINUX64BE-NEXT: mflr r0
+; LINUX64BE-NEXT: stdu r1, -128(r1)
+; LINUX64BE-NEXT: std r0, 144(r1)
+; LINUX64BE-NEXT: .cfi_def_cfa_offset 128
+; LINUX64BE-NEXT: .cfi_offset lr, 16
+; LINUX64BE-NEXT: .cfi_offset r30, -16
+; LINUX64BE-NEXT: addis r3, r2, a at got@tlsld at ha
+; LINUX64BE-NEXT: std r30, 112(r1) # 8-byte Folded Spill
+; LINUX64BE-NEXT: addi r3, r3, a at got@tlsld at l
+; LINUX64BE-NEXT: bl __tls_get_addr(a at tlsld)
+; LINUX64BE-NEXT: nop
+; LINUX64BE-NEXT: addis r3, r3, a at dtprel@ha
+; LINUX64BE-NEXT: addi r30, r3, a at dtprel@l
+; LINUX64BE-NEXT: addis r3, r2, b at got@tlsld at ha
+; LINUX64BE-NEXT: addi r3, r3, b at got@tlsld at l
+; LINUX64BE-NEXT: bl __tls_get_addr(b at tlsld)
+; LINUX64BE-NEXT: nop
+; LINUX64BE-NEXT: addis r3, r3, b at dtprel@ha
+; LINUX64BE-NEXT: addi r5, r3, b at dtprel@l
+; LINUX64BE-NEXT: addis r3, r2, .L__ModuleStringPool at toc@ha
+; LINUX64BE-NEXT: addi r4, r3, .L__ModuleStringPool at toc@l
+; LINUX64BE-NEXT: addi r3, r4, 71
+; LINUX64BE-NEXT: addi r6, r4, 56
+; LINUX64BE-NEXT: mr r4, r30
+; LINUX64BE-NEXT: bl printf
+; LINUX64BE-NEXT: nop
+; LINUX64BE-NEXT: ld r30, 112(r1) # 8-byte Folded Reload
+; LINUX64BE-NEXT: addi r1, r1, 128
+; LINUX64BE-NEXT: ld r0, 16(r1)
+; LINUX64BE-NEXT: mtlr r0
+; LINUX64BE-NEXT: blr
+entry:
+ %0 = tail call align 1 ptr @llvm.threadlocal.address.p0(ptr align 1 @a)
+ %1 = tail call align 1 ptr @llvm.threadlocal.address.p0(ptr align 1 @b)
+ %call = tail call signext i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, ptr noundef nonnull %0, ptr noundef nonnull %1, ptr noundef nonnull @c)
+ ret void
+}
+
+define void @test_func() {
+; CHECK64-LABEL: test_func:
+; CHECK64: # %bb.0: # %entry
+; CHECK64-NEXT: mflr r0
+; CHECK64-NEXT: stdu r1, -112(r1)
+; CHECK64-NEXT: ld r3, L..C1(r2) # @__ModuleStringPool
+; CHECK64-NEXT: std r0, 128(r1)
+; CHECK64-NEXT: addi r3, r3, 16
+; CHECK64-NEXT: bl .callee[PR]
+; CHECK64-NEXT: nop
+; CHECK64-NEXT: addi r1, r1, 112
+; CHECK64-NEXT: ld r0, 16(r1)
+; CHECK64-NEXT: mtlr r0
+; CHECK64-NEXT: blr
+;
+; CHECK32-LABEL: test_func:
+; CHECK32: # %bb.0: # %entry
+; CHECK32-NEXT: mflr r0
+; CHECK32-NEXT: stwu r1, -64(r1)
+; CHECK32-NEXT: lwz r3, L..C1(r2) # @__ModuleStringPool
+; CHECK32-NEXT: stw r0, 72(r1)
+; CHECK32-NEXT: addi r3, r3, 16
+; CHECK32-NEXT: bl .callee[PR]
+; CHECK32-NEXT: nop
+; CHECK32-NEXT: addi r1, r1, 64
+; CHECK32-NEXT: lwz r0, 8(r1)
+; CHECK32-NEXT: mtlr r0
+; CHECK32-NEXT: blr
+;
+; LINUX64LE-LABEL: test_func:
+; LINUX64LE: # %bb.0: # %entry
+; LINUX64LE-NEXT: mflr r0
+; LINUX64LE-NEXT: stdu r1, -32(r1)
+; LINUX64LE-NEXT: std r0, 48(r1)
+; LINUX64LE-NEXT: .cfi_def_cfa_offset 32
+; LINUX64LE-NEXT: .cfi_offset lr, 16
+; LINUX64LE-NEXT: addis r3, r2, .L__ModuleStringPool at toc@ha
+; LINUX64LE-NEXT: addi r3, r3, .L__ModuleStringPool at toc@l
+; LINUX64LE-NEXT: addi r3, r3, 16
+; LINUX64LE-NEXT: bl callee
+; LINUX64LE-NEXT: nop
+; LINUX64LE-NEXT: addi r1, r1, 32
+; LINUX64LE-NEXT: ld r0, 16(r1)
+; LINUX64LE-NEXT: mtlr r0
+; LINUX64LE-NEXT: blr
+;
+; LINUX64BE-LABEL: test_func:
+; LINUX64BE: # %bb.0: # %entry
+; LINUX64BE-NEXT: mflr r0
+; LINUX64BE-NEXT: stdu r1, -112(r1)
+; LINUX64BE-NEXT: std r0, 128(r1)
+; LINUX64BE-NEXT: .cfi_def_cfa_offset 112
+; LINUX64BE-NEXT: .cfi_offset lr, 16
+; LINUX64BE-NEXT: addis r3, r2, .L__ModuleStringPool at toc@ha
+; LINUX64BE-NEXT: addi r3, r3, .L__ModuleStringPool at toc@l
+; LINUX64BE-NEXT: addi r3, r3, 16
+; LINUX64BE-NEXT: bl callee
+; LINUX64BE-NEXT: nop
+; LINUX64BE-NEXT: addi r1, r1, 112
+; LINUX64BE-NEXT: ld r0, 16(r1)
+; LINUX64BE-NEXT: mtlr r0
+; LINUX64BE-NEXT: blr
+entry:
+ tail call void @callee(ptr noundef nonnull @d) #4
+ ret void
+}
+
+define void @test_func2() {
+; CHECK64-LABEL: test_func2:
+; CHECK64: # %bb.0: # %entry
+; CHECK64-NEXT: mflr r0
+; CHECK64-NEXT: stdu r1, -112(r1)
+; CHECK64-NEXT: ld r3, L..C1(r2) # @__ModuleStringPool
+; CHECK64-NEXT: std r0, 128(r1)
+; CHECK64-NEXT: bl .callee2[PR]
+; CHECK64-NEXT: nop
+; CHECK64-NEXT: addi r1, r1, 112
+; CHECK64-NEXT: ld r0, 16(r1)
+; CHECK64-NEXT: mtlr r0
+; CHECK64-NEXT: blr
+;
+; CHECK32-LABEL: test_func2:
+; CHECK32: # %bb.0: # %entry
+; CHECK32-NEXT: mflr r0
+; CHECK32-NEXT: stwu r1, -64(r1)
+; CHECK32-NEXT: lwz r3, L..C1(r2) # @__ModuleStringPool
+; CHECK32-NEXT: stw r0, 72(r1)
+; CHECK32-NEXT: bl .callee2[PR]
+; CHECK32-NEXT: nop
+; CHECK32-NEXT: addi r1, r1, 64
+; CHECK32-NEXT: lwz r0, 8(r1)
+; CHECK32-NEXT: mtlr r0
+; CHECK32-NEXT: blr
+;
+; LINUX64LE-LABEL: test_func2:
+; LINUX64LE: # %bb.0: # %entry
+; LINUX64LE-NEXT: mflr r0
+; LINUX64LE-NEXT: stdu r1, -32(r1)
+; LINUX64LE-NEXT: std r0, 48(r1)
+; LINUX64LE-NEXT: .cfi_def_cfa_offset 32
+; LINUX64LE-NEXT: .cfi_offset lr, 16
+; LINUX64LE-NEXT: addis r3, r2, .L__ModuleStringPool at toc@ha
+; LINUX64LE-NEXT: addi r3, r3, .L__ModuleStringPool at toc@l
+; LINUX64LE-NEXT: bl callee2
+; LINUX64LE-NEXT: nop
+; LINUX64LE-NEXT: addi r1, r1, 32
+; LINUX64LE-NEXT: ld r0, 16(r1)
+; LINUX64LE-NEXT: mtlr r0
+; LINUX64LE-NEXT: blr
+;
+; LINUX64BE-LABEL: test_func2:
+; LINUX64BE: # %bb.0: # %entry
+; LINUX64BE-NEXT: mflr r0
+; LINUX64BE-NEXT: stdu r1, -112(r1)
+; LINUX64BE-NEXT: std r0, 128(r1)
+; LINUX64BE-NEXT: .cfi_def_cfa_offset 112
+; LINUX64BE-NEXT: .cfi_offset lr, 16
+; LINUX64BE-NEXT: addis r3, r2, .L__ModuleStringPool at toc@ha
+; LINUX64BE-NEXT: addi r3, r3, .L__ModuleStringPool at toc@l
+; LINUX64BE-NEXT: bl callee2
+; LINUX64BE-NEXT: nop
+; LINUX64BE-NEXT: addi r1, r1, 112
+; LINUX64BE-NEXT: ld r0, 16(r1)
+; LINUX64BE-NEXT: mtlr r0
+; LINUX64BE-NEXT: blr
+entry:
+ tail call void @callee2(ptr noundef nonnull @e) #4
+ ret void
+}
>From 1028131c95602da5746a06b39609cf1fa13fe371 Mon Sep 17 00:00:00 2001
From: Amy Kwan <amy.kwan1 at ibm.com>
Date: Wed, 5 Jun 2024 14:35:54 -0500
Subject: [PATCH 2/3] Combine condition to check for TLS variables in the
conditions for globals that are not constant or do not have initializers
---
llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp b/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp
index dc7d2910aaa7e..daf6a0e65d54b 100644
--- a/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp
+++ b/llvm/lib/Target/PowerPC/PPCMergeStringPool.cpp
@@ -170,8 +170,9 @@ void PPCMergeStringPool::collectCandidateConstants(Module &M) {
LLVM_DEBUG(dbgs() << "hasInitializer() " << Global.hasInitializer()
<< "\n");
- // We can only pool constants.
- if (!Global.isConstant() || !Global.hasInitializer())
+ // We can only pool non-thread-local constants.
+ if (!Global.isConstant() || !Global.hasInitializer() ||
+ Global.isThreadLocal())
continue;
// If a global constant has a section we do not try to pool it because
@@ -215,11 +216,6 @@ void PPCMergeStringPool::collectCandidateConstants(Module &M) {
Global.getLinkage() != GlobalValue::InternalLinkage)
continue;
- // Do not pool thread-local constants, as the pooled strings can contain
- // non-thread-local constants, and these should not be mixed together.
- if (Global.isThreadLocal())
- continue;
-
LLVM_DEBUG(dbgs() << "Constant data of Global: ");
LLVM_DEBUG(ConstData->dump());
LLVM_DEBUG(dbgs() << "\n\n");
>From 9456d0814f8cb40eadd34fe077e1dd0c028b0660 Mon Sep 17 00:00:00 2001
From: Amy Kwan <amy.kwan1 at ibm.com>
Date: Tue, 11 Jun 2024 23:46:01 -0500
Subject: [PATCH 3/3] Address review comment by adding the toc entry checks
---
.../PowerPC/mergeable-string-pool-tls.ll | 113 ++++++++++++++++++
1 file changed, 113 insertions(+)
diff --git a/llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll b/llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll
index 3abe148dbb00d..a5687507b3827 100644
--- a/llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll
+++ b/llvm/test/CodeGen/PowerPC/mergeable-string-pool-tls.ll
@@ -258,3 +258,116 @@ entry:
tail call void @callee2(ptr noundef nonnull @e) #4
ret void
}
+
+; Check the contents of the TLS data and the __ModuleStringPool structure to
+; check that TLS data has been skipped during string pool merging.
+
+; CHECK64: .csect a[TL],2
+; CHECK64-NEXT: .lglobl a[TL]
+; CHECK64-NEXT: .string "tls1"
+; CHECK64: .csect b[TL],2
+; CHECK64-NEXT: .lglobl b[TL]
+; CHECK64-NEXT: .string "tls2"
+; CHECK64: .csect L..__ModuleStringPool[RO],2
+; CHECK64-NEXT: .align 2
+; CHECK64-NEXT: .vbyte 4, 0x42af999a
+; CHECK64-NEXT: .vbyte 4, 0x42b1999a
+; CHECK64-NEXT: .vbyte 4, 0x42b3cccd
+; CHECK64-NEXT: .vbyte 4, 0x42b5999a
+; CHECK64-NEXT: .vbyte 4, 1
+; CHECK64-NEXT: .vbyte 4, 2
+; CHECK64-NEXT: .vbyte 4, 3
+; CHECK64-NEXT: .vbyte 4, 4
+; CHECK64-NEXT: .vbyte 4, 5
+; CHECK64-NEXT: .vbyte 4, 6
+; CHECK64-NEXT: .vbyte 4, 7
+; CHECK64-NEXT: .vbyte 4, 8
+; CHECK64-NEXT: .vbyte 4, 9
+; CHECK64-NEXT: .vbyte 4, 10
+; CHECK64-NEXT: .string "Regular global"
+; CHECK64-NEXT: .byte 'T,'L,'S,' ,'v,'a,'r,'i,'a,'b,'l,'e,' ,'1,',,' ,'2,' ,'a,'n,'d,' ,'n,'o,'n,'-,'T,'L,'S,' ,'v,'a,'r,':,' ,'%,'s,',,' ,'%,'s,',,' ,'%,'s,0012,0000
+; CHECK64: L..C1:
+; CHECK64-NEXT: .tc L..__ModuleStringPool[TC],L..__ModuleStringPool[RO]
+; CHECK64: L..C2:
+; CHECK64-NEXT: .tc a[TC],a[TL]@ld
+; CHECK64: L..C3:
+; CHECK64-NEXT: .tc b[TC],b[TL]@ld
+
+; CHECK32: .csect a[TL],2
+; CHECK32-NEXT: .lglobl a[TL]
+; CHECK32-NEXT: .string "tls1"
+; CHECK32: .csect b[TL],2
+; CHECK32-NEXT: .lglobl b[TL]
+; CHECK32-NEXT: .string "tls2"
+; CHECK32: .csect L..__ModuleStringPool[RO],2
+; CHECK32-NEXT: .align 2
+; CHECK32-NEXT: .vbyte 4, 0x42af999a
+; CHECK32-NEXT: .vbyte 4, 0x42b1999a
+; CHECK32-NEXT: .vbyte 4, 0x42b3cccd
+; CHECK32-NEXT: .vbyte 4, 0x42b5999a
+; CHECK32-NEXT: .vbyte 4, 1
+; CHECK32-NEXT: .vbyte 4, 2
+; CHECK32-NEXT: .vbyte 4, 3
+; CHECK32-NEXT: .vbyte 4, 4
+; CHECK32-NEXT: .vbyte 4, 5
+; CHECK32-NEXT: .vbyte 4, 6
+; CHECK32-NEXT: .vbyte 4, 7
+; CHECK32-NEXT: .vbyte 4, 8
+; CHECK32-NEXT: .vbyte 4, 9
+; CHECK32-NEXT: .vbyte 4, 10
+; CHECK32-NEXT: .string "Regular global"
+; CHECK32-NEXT: .byte 'T,'L,'S,' ,'v,'a,'r,'i,'a,'b,'l,'e,' ,'1,',,' ,'2,' ,'a,'n,'d,' ,'n,'o,'n,'-,'T,'L,'S,' ,'v,'a,'r,':,' ,'%,'s,',,' ,'%,'s,',,' ,'%,'s,0012,0000
+; CHECK32: L..C1:
+; CHECK32-NEXT: .tc L..__ModuleStringPool[TC],L..__ModuleStringPool[RO]
+; CHECK32: L..C2:
+; CHECK32-NEXT: .tc a[TC],a[TL]@ld
+; CHECK32: L..C3:
+; CHECK32-NEXT: .tc b[TC],b[TL]@ld
+
+; LINUX64LE: a:
+; LINUX64LE-NEXT: .asciz "tls1"
+; LINUX64LE-NEXT: .size a, 5
+; LINUX64LE: b:
+; LINUX64LE-NEXT: .asciz "tls2"
+; LINUX64LE-NEXT: .size b, 5
+; LINUX64LE: .L__ModuleStringPool:
+; LINUX64LE-NEXT: .long 0x42af999a
+; LINUX64LE-NEXT: .long 0x42b1999a
+; LINUX64LE-NEXT: .long 0x42b3cccd
+; LINUX64LE-NEXT: .long 0x42b5999a
+; LINUX64LE-NEXT: .long 1
+; LINUX64LE-NEXT: .long 2
+; LINUX64LE-NEXT: .long 3
+; LINUX64LE-NEXT: .long 4
+; LINUX64LE-NEXT: .long 5
+; LINUX64LE-NEXT: .long 6
+; LINUX64LE-NEXT: .long 7
+; LINUX64LE-NEXT: .long 8
+; LINUX64LE-NEXT: .long 9
+; LINUX64LE-NEXT: .long 10
+; LINUX64LE-NEXT: .asciz "Regular global"
+; LINUX64LE-NEXT: .asciz "TLS variable 1, 2 and non-TLS var: %s, %s, %s\n"
+
+; LINUX64BE: a:
+; LINUX64BE-NEXT: .asciz "tls1"
+; LINUX64BE-NEXT: .size a, 5
+; LINUX64BE: b:
+; LINUX64BE-NEXT: .asciz "tls2"
+; LINUX64BE-NEXT: .size b, 5
+; LINUX64BE: .L__ModuleStringPool:
+; LINUX64BE-NEXT: .long 0x42af999a
+; LINUX64BE-NEXT: .long 0x42b1999a
+; LINUX64BE-NEXT: .long 0x42b3cccd
+; LINUX64BE-NEXT: .long 0x42b5999a
+; LINUX64BE-NEXT: .long 1
+; LINUX64BE-NEXT: .long 2
+; LINUX64BE-NEXT: .long 3
+; LINUX64BE-NEXT: .long 4
+; LINUX64BE-NEXT: .long 5
+; LINUX64BE-NEXT: .long 6
+; LINUX64BE-NEXT: .long 7
+; LINUX64BE-NEXT: .long 8
+; LINUX64BE-NEXT: .long 9
+; LINUX64BE-NEXT: .long 10
+; LINUX64BE-NEXT: .asciz "Regular global"
+; LINUX64BE-NEXT: .asciz "TLS variable 1, 2 and non-TLS var: %s, %s, %s\n"
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