961f31d8ad
clang/lib/CodeGen/CodeGenModule sets dso_local on applicable global variables, we don't need to duplicate the work in TargetMachine:shouldAssumeDSOLocal. (Actually the long-term goal (started by r324535) is to remove as much additional implied dso_local in TargetMachine:shouldAssumeDSOLocal as possible.) By not implying dso_local, we will respect dso_local/dso_preemptable specifiers set by the frontend. This allows the proposed -fno-direct-access-external-data option to work with -fno-pic and prevent copy relocations. This patch should be NFC in terms of the Clang behavior because the case we don't set dso_local is a case Clang sets dso_local. However, some tests don't set dso_local on some `external global` and expose some differences. Most tests have been fixed to be more robust in previous commits.
70 lines
2.5 KiB
LLVM
70 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s --check-prefix=DARWIN
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; RUN: llc < %s -mtriple=x86_64-pc-linux -relocation-model=static | FileCheck %s --check-prefix=LINUX
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@ptr = external global i32* ; <i32**> [#uses=1]
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@src = external global [0 x i32] ; <[0 x i32]*> [#uses=1]
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@dst = external global [0 x i32] ; <[0 x i32]*> [#uses=1]
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@lptr = internal global i32* null ; <i32**> [#uses=1]
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@ldst = internal global [500 x i32] zeroinitializer, align 32 ; <[500 x i32]*> [#uses=1]
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@lsrc = internal global [500 x i32] zeroinitializer, align 32 ; <[500 x i32]*> [#uses=0]
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@bsrc = internal global [500000 x i32] zeroinitializer, align 32 ; <[500000 x i32]*> [#uses=0]
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@bdst = internal global [500000 x i32] zeroinitializer, align 32 ; <[500000 x i32]*> [#uses=0]
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define void @test1() nounwind {
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; DARWIN-LABEL: test1:
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; DARWIN: ## %bb.0:
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; DARWIN-NEXT: movq _src@{{.*}}(%rip), %rax
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; DARWIN-NEXT: movl (%rax), %eax
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; DARWIN-NEXT: movq _dst@{{.*}}(%rip), %rcx
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; DARWIN-NEXT: movl %eax, (%rcx)
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; DARWIN-NEXT: retq
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;
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; LINUX-LABEL: test1:
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; LINUX: # %bb.0:
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; LINUX-NEXT: movq src@{{.*}}(%rip), %rax
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; LINUX-NEXT: movl (%rax), %eax
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; LINUX-NEXT: movq dst@{{.*}}(%rip), %rcx
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; LINUX-NEXT: movl %eax, (%rcx)
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; LINUX-NEXT: retq
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%tmp = load i32, i32* getelementptr ([0 x i32], [0 x i32]* @src, i32 0, i32 0) ; <i32> [#uses=1]
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store i32 %tmp, i32* getelementptr ([0 x i32], [0 x i32]* @dst, i32 0, i32 0)
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ret void
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}
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define void @test2() nounwind {
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; DARWIN-LABEL: test2:
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; DARWIN: ## %bb.0:
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; DARWIN-NEXT: movq _dst@{{.*}}(%rip), %rax
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; DARWIN-NEXT: movq _ptr@{{.*}}(%rip), %rcx
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; DARWIN-NEXT: movq %rax, (%rcx)
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; DARWIN-NEXT: retq
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;
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; LINUX-LABEL: test2:
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; LINUX: # %bb.0:
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; LINUX-NEXT: movq dst@{{.*}}(%rip), %rax
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; LINUX-NEXT: movq ptr@{{.*}}(%rip), %rcx
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; LINUX-NEXT: movq %rax, (%rcx)
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; LINUX-NEXT: retq
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store i32* getelementptr ([0 x i32], [0 x i32]* @dst, i32 0, i32 0), i32** @ptr
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ret void
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}
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define void @test3() nounwind {
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; DARWIN-LABEL: test3:
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; DARWIN: ## %bb.0:
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; DARWIN-NEXT: leaq {{.*}}(%rip), %rax
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; DARWIN-NEXT: movq %rax, {{.*}}(%rip)
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; DARWIN-NEXT: retq
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;
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; LINUX-LABEL: test3:
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; LINUX: # %bb.0:
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; LINUX-NEXT: movq $ldst, {{.*}}(%rip)
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; LINUX-NEXT: retq
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store i32* getelementptr ([500 x i32], [500 x i32]* @ldst, i32 0, i32 0), i32** @lptr
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br label %return
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return: ; preds = %0
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ret void
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}
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