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-rw-r--r--llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp7
-rw-r--r--llvm/test/Transforms/InstCombine/call-cast-target.ll12
2 files changed, 16 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 0cd7b149d42..c949720b1f5 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -994,11 +994,12 @@ bool InstCombiner::transformConstExprCastCall(CallSite CS) {
Type *OldRetTy = Caller->getType();
Type *NewRetTy = FT->getReturnType();
- if (NewRetTy->isStructTy())
- return false; // TODO: Handle multiple return values.
-
// Check to see if we are changing the return type...
if (OldRetTy != NewRetTy) {
+
+ if (NewRetTy->isStructTy())
+ return false; // TODO: Handle multiple return values.
+
if (!CastInst::isBitCastable(NewRetTy, OldRetTy)) {
if (Callee->isDeclaration())
return false; // Cannot transform this return value.
diff --git a/llvm/test/Transforms/InstCombine/call-cast-target.ll b/llvm/test/Transforms/InstCombine/call-cast-target.ll
index 315c51683fd..1af3317a398 100644
--- a/llvm/test/Transforms/InstCombine/call-cast-target.ll
+++ b/llvm/test/Transforms/InstCombine/call-cast-target.ll
@@ -13,3 +13,15 @@ entry:
declare i8* @ctime(i32*)
+define internal { i8 } @foo(i32*) {
+entry:
+ ret { i8 } { i8 0 }
+}
+
+define void @test_struct_ret() {
+; CHECK-LABEL: @test_struct_ret
+; CHECK-NOT: bitcast
+entry:
+ %0 = call { i8 } bitcast ({ i8 } (i32*)* @foo to { i8 } (i16*)*)(i16* null)
+ ret void
+}
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