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[ThinLTO] Add FunctionAttrs to ThinLTO index

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Adds function attributes to index: ReadNone, ReadOnly, NoRecurse, NoAlias. This attributes will be used for future ThinLTO optimizations that will propagate function attributes across modules.

llvm-svn: 310061
This commit is contained in:
Charles Saternos
2017-08-04 16:00:58 +00:00
parent 79e7f6b3e3
commit 75da10d1b2
14 changed files with 142 additions and 44 deletions
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10
llvm/test/Bitcode/thinlto-function-summary-refgraph.ll
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@@ -38,24 +38,24 @@
; 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 {{.*}} op3=1 op4=2 op5=2/>
; CHECK-DAG: <PERMODULE {{.*}} op0=11 op1=0 {{.*}} op4=1 op5=2 op6=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 {{.*}} op3=1 op4=1 op5=5/>
; CHECK-DAG: <PERMODULE {{.*}} op0=6 op1=5 {{.*}} op4=1 op5=1 op6=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 {{.*}} op3=1 op4=4 op5=4/>
; CHECK-DAG: <PERMODULE {{.*}} op0=7 op1=1 {{.*}} op4=1 op5=4 op6=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=8 {{.*}} op3=0 op4=3/>
; CHECK-DAG: <PERMODULE {{.*}} op0=8 op1=8 {{.*}} op4=0 op5=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 {{.*}} op3=0 op4=3/>
; CHECK-DAG: <PERMODULE {{.*}} op0=9 op1=3 {{.*}} op4=0 op5=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/>