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6517513ff1
Move LTO::run() to a "run" subcommand so that we can introduce new subcommands for testing different parts of the LTO implementation. This doesn't use llvm::cl subcommands because it doesn't appear to be currently possible to pass an argument not associated with a subcommand to a subcommand (e.g. -lto-use-new-pm, -mcpu=yonah). Differential Revision: https://reviews.llvm.org/D31410 llvm-svn: 299967
129 lines
3.9 KiB
LLVM
129 lines
3.9 KiB
LLVM
; Test to ensure that uses and defs in module level asm are handled
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; appropriately. Specifically, we should conservatively block importing
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; of any references to these values, as they can't be renamed.
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; RUN: opt -module-summary %s -o %t1.bc
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; RUN: opt -module-summary %p/Inputs/module_asm2.ll -o %t2.bc
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; RUN: llvm-lto -thinlto-action=run -exported-symbol=main -exported-symbol=func1 -exported-symbol=func2 -exported-symbol=func3 -exported-symbol=callglobalfunc -exported-symbol=callweakfunc %t1.bc %t2.bc
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; RUN: llvm-nm %t1.bc.thinlto.o | FileCheck %s --check-prefix=NM0
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; RUN: llvm-nm %t2.bc.thinlto.o | FileCheck %s --check-prefix=NM1
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; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t.o -save-temps \
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; RUN: -r=%t1.bc,foo,plx \
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; RUN: -r=%t1.bc,globalfunc,plx \
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; RUN: -r=%t1.bc,globalfunc,plx \
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; RUN: -r=%t1.bc,weakfunc,plx \
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; RUN: -r=%t1.bc,weakfunc,plx \
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; RUN: -r=%t1.bc,b,pl \
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; RUN: -r=%t1.bc,x,pl \
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; RUN: -r=%t1.bc,func1,pl \
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; RUN: -r=%t1.bc,func2,pl \
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; RUN: -r=%t1.bc,func3,pl \
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; RUN: -r=%t1.bc,callglobalfunc,plx \
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; RUN: -r=%t1.bc,callweakfunc,plx \
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; RUN: -r=%t2.bc,main,plx \
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; RUN: -r=%t2.bc,func1,l \
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; RUN: -r=%t2.bc,func2,l \
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; RUN: -r=%t2.bc,func3,l \
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; RUN: -r=%t2.bc,callglobalfunc,l \
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; RUN: -r=%t2.bc,callweakfunc,l
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; RUN: llvm-nm %t.o.0 | FileCheck %s --check-prefix=NM0
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; RUN: llvm-nm %t.o.1 | FileCheck %s --check-prefix=NM1
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; Check that local values b and x, which are referenced on
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; llvm.used and llvm.compiler.used, respectively, are not promoted.
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; Similarly, foo which is defined in module level asm should not be
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; promoted.
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; NM0-DAG: d b
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; NM0-DAG: d x
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; NM0-DAG: t foo
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; NM0-DAG: T func1
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; NM0-DAG: T func2
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; NM0-DAG: T func3
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; NM0-DAG: T callglobalfunc
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; NM0-DAG: T callweakfunc
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; NM0-DAG: T globalfunc
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; NM0-DAG: W weakfunc
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; Ensure that foo, b and x are likewise not exported (imported as refs
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; into the other module), since they can't be promoted. Additionally,
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; referencing functions func2 and func3 should not have been
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; imported. However, we should have been able to import callglobalfunc
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; and callweakfunc (leaving undefined symbols globalfunc and weakfunc)
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; since globalfunc and weakfunc were defined but not local in module asm.
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; NM1-NOT: foo
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; NM1-NOT: b
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; NM1-NOT: x
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; NM1-DAG: U func1
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; NM1-DAG: U func2
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; NM1-DAG: U func3
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; NM1-DAG: U globalfunc
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; NM1-DAG: U weakfunc
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; NM1-DAG: T main
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; NM1-NOT: foo
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; NM1-NOT: b
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; NM1-NOT: x
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@b = internal global i32 1, align 4
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@x = internal global i32 1, align 4
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@llvm.compiler.used = appending global [1 x i8*] [i8* bitcast (i32* @b to i8*)], section "llvm.metadata"
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@llvm.used = appending global [1 x i8*] [i8* bitcast (i32* @x to i8*)], section "llvm.metadata"
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module asm "\09.text"
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module asm "\09.type\09foo,@function"
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module asm "foo:"
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module asm "\09movl b, %eax"
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module asm "\09movl x, %edx"
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module asm "\09ret "
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module asm "\09.size\09foo, .-foo"
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module asm ""
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module asm "\09.globl\09globalfunc"
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module asm "\09.type\09globalfunc,@function"
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module asm "globalfunc:"
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module asm "\09movl b, %eax"
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module asm "\09movl x, %edx"
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module asm "\09ret "
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module asm "\09.size\09globalfunc, .-globalfunc"
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module asm ""
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module asm "\09.weak\09weakfunc"
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module asm "\09.type\09weakfunc,@function"
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module asm "weakfunc:"
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module asm "\09movl b, %eax"
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module asm "\09movl x, %edx"
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module asm "\09ret "
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module asm "\09.size\09weakfunc, .-weakfunc"
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module asm ""
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declare i16 @foo() #0
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declare i16 @globalfunc() #0
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declare i16 @weakfunc() #0
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define i32 @func1() #1 {
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call i16 @foo()
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ret i32 1
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}
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define i32 @func2() #1 {
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%1 = load i32, i32* @b, align 4
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ret i32 %1
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}
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define i32 @func3() #1 {
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%1 = load i32, i32* @x, align 4
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ret i32 %1
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}
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define i32 @callglobalfunc() #1 {
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call i16 @globalfunc()
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ret i32 1
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}
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define i32 @callweakfunc() #1 {
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call i16 @weakfunc()
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ret i32 1
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}
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