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[ThinLTO] Internalize readonly globals

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This patch allows internalising globals if all accesses to them
(from live functions) are from non-volatile load instructions

Differential revision: https://reviews.llvm.org/D49362


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@346584 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eugene Leviant
2018-11-10 08:31:21 +00:00
parent 01568d51f0
commit 10c84a8f35
42 changed files with 774 additions and 89 deletions
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12
test/Bitcode/thinlto-function-summary-refgraph.ll
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@@ -41,27 +41,27 @@
; CHECK: <GLOBALVAL_SUMMARY_BLOCK
; Function main contains call to func, as well as address reference to func:
; op0=main op4=func op5=func
; CHECK-DAG: <PERMODULE {{.*}} op0=11 op1=0 {{.*}} op4=1 op5=2 op6=2/>
; CHECK-DAG: <PERMODULE {{.*}} op0=11 op1=0 {{.*}} op4=1 op5=0 op6=2 op7=2/>
; Function W contains a call to func3 as well as a reference to globalvar:
; op0=W op4=globalvar op5=func3
; CHECK-DAG: <PERMODULE {{.*}} op0=6 op1=5 {{.*}} op4=1 op5=1 op6=5/>
; CHECK-DAG: <PERMODULE {{.*}} op0=6 op1=5 {{.*}} op4=1 op5=0 op6=1 op7=5/>
; Function X contains call to foo, as well as address reference to foo
; which is in the same instruction as the call:
; op0=X op4=foo op5=foo
; CHECK-DAG: <PERMODULE {{.*}} op0=7 op1=1 {{.*}} op4=1 op5=4 op6=4/>
; CHECK-DAG: <PERMODULE {{.*}} op0=7 op1=1 {{.*}} op4=1 op5=0 op6=4 op7=4/>
; Function Y contains call to func2, and ensures we don't incorrectly add
; a reference to it when reached while earlier analyzing the phi using its
; return value:
; op0=Y op4=func2
; CHECK-DAG: <PERMODULE {{.*}} op0=8 op1=72 {{.*}} op4=0 op5=3/>
; CHECK-DAG: <PERMODULE {{.*}} op0=8 op1=72 {{.*}} op4=0 op5=0 op6=3/>
; Function Z contains call to func2, and ensures we don't incorrectly add
; a reference to it when reached while analyzing subsequent use of its return
; value:
; op0=Z op4=func2
; CHECK-DAG: <PERMODULE {{.*}} op0=9 op1=3 {{.*}} op4=0 op5=3/>
; CHECK-DAG: <PERMODULE {{.*}} op0=9 op1=3 {{.*}} op4=0 op5=0 op6=3/>
; Variable bar initialization contains address reference to func:
; op0=bar op2=func
; CHECK-DAG: <PERMODULE_GLOBALVAR_INIT_REFS {{.*}} op0=0 op1=0 op2=2/>
; CHECK-DAG: <PERMODULE_GLOBALVAR_INIT_REFS {{.*}} op0=0 op1=0 op2=1 op3=2/>
; CHECK: </GLOBALVAL_SUMMARY_BLOCK>
; CHECK: <STRTAB_BLOCK