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llvm-project/llvm/test/ThinLTO/X86/cfi-icall-only-defuse.ll

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[ThinLTO] only emit used or referenced CFI records to index Summary: We emit CFI_FUNCTION_DEFS and CFI_FUNCTION_DECLS to distributed ThinLTO indices to implement indirect function call checking. This change causes us to only emit entries for functions that are either defined or used by the module we're writing the index for (instead of all functions in the combined index), which can make the indices substantially smaller. Fixes PR42378. Reviewers: pcc, vitalybuka, eugenis Subscribers: mehdi_amini, hiraditya, dexonsmith, arphaman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D63887 llvm-svn: 365537
2019-07-10 02:50:55 +08:00
; Verifies that only functions defined or used by each module make it into the
; CFI functions sets in that module's distributed index.
; RUN: opt -thinlto-bc -thinlto-split-lto-unit %s -o %t1.bc
; RUN: opt -thinlto-bc -thinlto-split-lto-unit %S/Inputs/cfi-icall-only-bazqux.ll -o %t2.bc
; RUN: llvm-lto2 run -thinlto-distributed-indexes %t1.bc %t2.bc -o %t.out \
; RUN: -r %t1.bc,bar,plx \
; RUN: -r %t1.bc,baz,x \
; RUN: -r %t1.bc,f,plx \
; RUN: -r %t1.bc,foo,plx \
; RUN: -r %t2.bc,bar,x \
; RUN: -r %t2.bc,baz,plx \
; RUN: -r %t2.bc,g,plx \
; RUN: -r %t2.bc,qux,plx
; RUN: llvm-bcanalyzer -dump %t1.bc.thinlto.bc | FileCheck %s --check-prefix=FOOBAZ
; RUN: llvm-bcanalyzer -dump %t2.bc.thinlto.bc | FileCheck %s --check-prefix=BARQUX
Reland "Change the X86 datalayout to add three address spaces for 32 bit signed, 32 bit unsigned, and 64 bit pointers." This reverts 57076d3199fc2b0af4a3736b7749dd5462cacda5. Original review at https://reviews.llvm.org/D64931. Review for added fix at https://reviews.llvm.org/D66843. llvm-svn: 371568
2019-09-11 07:15:38 +08:00
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
[ThinLTO] only emit used or referenced CFI records to index Summary: We emit CFI_FUNCTION_DEFS and CFI_FUNCTION_DECLS to distributed ThinLTO indices to implement indirect function call checking. This change causes us to only emit entries for functions that are either defined or used by the module we're writing the index for (instead of all functions in the combined index), which can make the indices substantially smaller. Fixes PR42378. Reviewers: pcc, vitalybuka, eugenis Subscribers: mehdi_amini, hiraditya, dexonsmith, arphaman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D63887 llvm-svn: 365537
2019-07-10 02:50:55 +08:00
target triple = "x86_64-unknown-linux-gnu"
declare !type !0 i8 @baz(i8*)
declare i1 @llvm.type.test(i8* %ptr, metadata %type) nounwind readnone
define i8 @foo(i8* %p) !type !0 {
%x = call i1 @llvm.type.test(i8* %p, metadata !"t1")
%1 = select i1 %x, i8 0, i8 1
ret i8 %1
}
define i8 @bar(i8* %p) !type !0 {
%x = call i1 @llvm.type.test(i8* %p, metadata !"t1")
ret i8 2
}
define i8 @f(i1 %i, i8* %p) {
%1 = select i1 %i, i8(i8*)* @foo, i8(i8*)* @baz
%2 = call i8 %1(i8* %p)
ret i8 %2
}
!0 = !{i64 0, !"t1"}
; FOOBAZ: <GLOBALVAL_SUMMARY_BLOCK
; FOOBAZ: <CFI_FUNCTION_DEFS op0=0 op1=3 op2=3 op3=3 op4=6 op5=3/>
; FOOBAZ: <TYPE_ID op0=9 op1=2 op2=4 op3=7 op4=0 op5=0 op6=0 op7=0/>
; FOOBAZ: </GLOBALVAL_SUMMARY_BLOCK>
; FOOBAZ: <STRTAB_BLOCK
; FOOBAZ-NEXT: <BLOB abbrevid=4/> blob data = 'barbazfoot1'
; FOOBAZ-NEXT: </STRTAB_BLOCK>
; BARQUX: <GLOBALVAL_SUMMARY_BLOCK
; BARQUX: <CFI_FUNCTION_DEFS op0=0 op1=3 op2=3 op3=3 op4=6 op5=3/>
; BARQUX: <TYPE_ID op0=9 op1=2 op2=4 op3=7 op4=0 op5=0 op6=0 op7=0/>
; BARQUX: </GLOBALVAL_SUMMARY_BLOCK>
; BARQUX: <STRTAB_BLOCK
; BARQUX-NEXT: <BLOB abbrevid=4/> blob data = 'barbazquxt1'
; BARQUX-NEXT: </STRTAB_BLOCK>