diff options
| author | Huihui Zhang <huihuiz@codeaurora.org> | 2018-08-30 00:49:50 +0000 |
|---|---|---|
| committer | Huihui Zhang <huihuiz@codeaurora.org> | 2018-08-30 00:49:50 +0000 |
| commit | 2f4106592dfb1842f0fc48426bb7395f299a8c5d (patch) | |
| tree | 161515daf72c3e7beba2b5f7d35fb241867b586a /llvm/test/CodeGen/ARM | |
| parent | a4132df0ee23783479c2a5f2f3054d28580ee5b4 (diff) | |
| download | bcm5719-llvm-2f4106592dfb1842f0fc48426bb7395f299a8c5d.tar.gz bcm5719-llvm-2f4106592dfb1842f0fc48426bb7395f299a8c5d.zip | |
[GlobalMerge] Fix GlobalMerge on bss external global variables.
Summary:
Global variables that are external and zero initialized are
supposed to be merged with global variables in the bss section
rather than the data section.
Reviewers: efriedma, rengolin, t.p.northover, javed.absar, asl, john.brawn, pcc
Reviewed By: efriedma
Subscribers: dmgreen, llvm-commits
Differential Revision: https://reviews.llvm.org/D51379
llvm-svn: 341008
Diffstat (limited to 'llvm/test/CodeGen/ARM')
| -rw-r--r-- | llvm/test/CodeGen/ARM/global-merge-external-2.ll | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/global-merge-external-2.ll b/llvm/test/CodeGen/ARM/global-merge-external-2.ll new file mode 100644 index 00000000000..0abca99e6b8 --- /dev/null +++ b/llvm/test/CodeGen/ARM/global-merge-external-2.ll @@ -0,0 +1,65 @@ +; RUN: llc < %s -mtriple=arm-eabi -arm-global-merge | FileCheck %s --check-prefixes=CHECK,CHECK-MERGE +; RUN: llc < %s -mtriple=arm-eabi -arm-global-merge -global-merge-on-external=true | FileCheck %s --check-prefixes=CHECK,CHECK-MERGE +; RUN: llc < %s -mtriple=arm-eabi -arm-global-merge -global-merge-on-external=false | FileCheck %s --check-prefixes=CHECK,CHECK-NO-MERGE +; RUN: llc < %s -mtriple=arm-macho -arm-global-merge | FileCheck %s --check-prefixes=CHECK,CHECK-NO-MERGE +; RUN: llc < %s -mtriple=arm-eabi -arm-global-merge -relocation-model=pic | FileCheck %s --check-prefixes=CHECK,CHECK-NO-MERGE +; RUN: llc < %s -mtriple=thumbv7-win32 -arm-global-merge | FileCheck %s --check-prefixes=CHECK-WIN32 + +@x = global i32 0, align 4 +@y = global i32 0, align 4 +@z = internal global i32 1, align 4 + +define void @f1(i32 %a1, i32 %a2) { +;CHECK: f1: +;CHECK: ldr {{r[0-9]+}}, [[LABEL1:\.?LCPI[0-9]+_[0-9]]] +;CHECK: [[LABEL1]]: +;CHECK-MERGE: .long .L_MergedGlobals +;CHECK-NO-MERGE: .long {{_?x}} +;CHECK-WIN32: f1: +;CHECK-WIN32: movw [[REG1:r[0-9]+]], :lower16:.L_MergedGlobals +;CHECK-WIN32: movt [[REG1]], :upper16:.L_MergedGlobals + store i32 %a1, i32* @x, align 4 + store i32 %a2, i32* @y, align 4 + ret void +} + +define void @g1(i32 %a1, i32 %a2) { +;CHECK: g1: +;CHECK: ldr {{r[0-9]+}}, [[LABEL2:\.?LCPI[0-9]+_[0-9]]] +;CHECK: ldr {{r[0-9]+}}, [[LABEL3:\.?LCPI[0-9]+_[0-9]]] +;CHECK: [[LABEL2]]: +;CHECK-MERGE: .long {{_?z}} +;CHECK: [[LABEL3]]: +;CHECK-MERGE: .long .L_MergedGlobals +;CHECK-NO-MERGE: .long {{_?y}} +;CHECK-WIN32: g1: +;CHECK-WIN32: movw [[REG2:r[0-9]+]], :lower16:z +;CHECK-WIN32: movt [[REG2]], :upper16:z +;CHECK-WIN32: movw [[REG3:r[0-9]+]], :lower16:.L_MergedGlobals +;CHECK-WIN32: movt [[REG3]], :upper16:.L_MergedGlobals + store i32 %a1, i32* @y, align 4 + store i32 %a2, i32* @z, align 4 + ret void +} + +;CHECK-NO-MERGE-NOT: .globl .L_MergedGlobals + +;CHECK-MERGE: .type .L_MergedGlobals,%object +;CHECK-MERGE: .local .L_MergedGlobals +;CHECK-MERGE: .comm .L_MergedGlobals,8,4 +;CHECK-WIN32: .lcomm .L_MergedGlobals,8,4 + +;CHECK-MERGE: .globl x +;CHECK-MERGE: .set x, .L_MergedGlobals +;CHECK-MERGE: .size x, 4 +;CHECK-MERGE: .globl y +;CHECK-MERGE: .set y, .L_MergedGlobals+4 +;CHECK-MERGE: .size y, 4 +;CHECK-MERGE-NOT: .set z, .L_MergedGlobals+8 + + +;CHECK-WIN32: .globl x +;CHECK-WIN32: .set x, .L_MergedGlobals +;CHECK-WIN32: .globl y +;CHECK-WIN32: .set y, .L_MergedGlobals+4 +;CHECK-WIN32-NOT: .set z, .L_MergedGlobals+8 |
