diff options
| author | Manman Ren <mren@apple.com> | 2013-03-16 00:11:09 +0000 |
|---|---|---|
| committer | Manman Ren <mren@apple.com> | 2013-03-16 00:11:09 +0000 |
| commit | 2710ed8fd997be04ff447b8be2190f8fb34ac22b (patch) | |
| tree | e16b3753c587ffff6ffeda2e04f35851de6f2d53 /test/CodeGenCXX/arm.cpp | |
| parent | 70e82dc7a254054f0de491493489da162e63c364 (diff) | |
Exploit this-return of a callsite in a this-return function.
For constructors/desctructors that return 'this', if there exists a callsite
that returns 'this' and is immediately before the return instruction, make
sure we are using the return value from the callsite.
We don't need to keep 'this' alive through the callsite. It also enables
optimizations in the backend, such as tail call optimization.
rdar://12818789
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177211 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGenCXX/arm.cpp')
| -rw-r--r-- | test/CodeGenCXX/arm.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/test/CodeGenCXX/arm.cpp b/test/CodeGenCXX/arm.cpp index 3d3b147aa1..48f2f00840 100644 --- a/test/CodeGenCXX/arm.cpp +++ b/test/CodeGenCXX/arm.cpp @@ -56,15 +56,15 @@ namespace test1 { // CHECK: [[THIS:%.*]] = alloca [[A]]*, align 4 // CHECK: store [[A]]* {{.*}}, [[A]]** [[THIS]] // CHECK: [[THIS1:%.*]] = load [[A]]** [[THIS]] - // CHECK: call [[A]]* @_ZN5test11AC2Ei( - // CHECK: ret [[A]]* [[THIS1]] + // CHECK: [[THIS2:%.*]] = call [[A]]* @_ZN5test11AC2Ei( + // CHECK: ret [[A]]* [[THIS2]] // CHECK: define linkonce_odr [[A]]* @_ZN5test11AD1Ev([[A]]* %this) unnamed_addr // CHECK: [[THIS:%.*]] = alloca [[A]]*, align 4 // CHECK: store [[A]]* {{.*}}, [[A]]** [[THIS]] // CHECK: [[THIS1:%.*]] = load [[A]]** [[THIS]] - // CHECK: call [[A]]* @_ZN5test11AD2Ev( - // CHECK: ret [[A]]* [[THIS1]] + // CHECK: [[THIS2:%.*]] = call [[A]]* @_ZN5test11AD2Ev( + // CHECK: ret [[A]]* [[THIS2]] } // Awkward virtual cases. |