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b787681e80
The effect of the bug was that we would incorrectly create summaries for global and weak values defined in module asm (since we were essentially testing for bit 1 which is SF_Undefined, and the RecordStreamer ignores local undefined references). This would have resulted in conservatively disabling importing of anything referencing globals and weaks defined in module asm. Added these cases to the test which now fails without this bug fix. Fixes PR31459. llvm-svn: 290610
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 %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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