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[test] HotColdSplit: cover use of opaque pointer type

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Add a test to cover the case where an extracted block contains a
lifetime marker for a pointer with an opaque type.
This commit is contained in:
Vedant Kumar 2020-10-22 12:24:15 -07:00
parent cea7888aec
commit 7ac3dc00ca
1 changed files with 47 additions and 0 deletions
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47
test/Transforms/HotColdSplit/lifetime-markers-on-inputs-3.ll Normal file
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; RUN: opt -S -hotcoldsplit -hotcoldsplit-threshold=0 < %s 2>&1 | FileCheck %s
%type1 = type opaque
%type2 = type opaque
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
declare void @use(%type1**, %type2**)
declare void @use2(%type1**, %type2**) cold
; CHECK-LABEL: define {{.*}}@foo(
define void @foo() {
entry:
%local1 = alloca %type1*
%local2 = alloca %type2*
%local1_cast = bitcast %type1** %local1 to i8*
%local2_cast = bitcast %type2** %local2 to i8*
br i1 undef, label %normalPath, label %outlinedPath
normalPath:
call void @use(%type1** %local1, %type2** %local2)
ret void
; CHECK-LABEL: codeRepl:
; CHECK: [[local1_cast:%.*]] = bitcast %type1** %local1 to i8*
; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[local1_cast]])
; CHECK-NEXT: [[local2_cast:%.*]] = bitcast %type2** %local2 to i8*
; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[local2_cast]])
; CHECK-NEXT: call void @foo.cold.1(i8* %local1_cast, i8* %local2_cast
outlinedPath:
call void @llvm.lifetime.start.p0i8(i64 1, i8* %local1_cast)
call void @llvm.lifetime.start.p0i8(i64 1, i8* %local2_cast)
call void @use2(%type1** %local1, %type2** %local2)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %local1_cast)
call void @llvm.lifetime.end.p0i8(i64 1, i8* %local2_cast)
br label %outlinedPathExit
outlinedPathExit:
ret void
}
; CHECK-LABEL: define {{.*}}@foo.cold.1(
; CHECK-NOT: @llvm.lifetime