Inliner: Don't mark swifterror allocas with lifetime markers
This would create a bitcast use which fails the verifier: swifterror values may
only be used by loads, stores, and as function arguments.
rdar://28233244
llvm-svn: 281114
diff --git a/llvm/lib/Transforms/Utils/InlineFunction.cpp b/llvm/lib/Transforms/Utils/InlineFunction.cpp
index e001f6d..383010f 100644
--- a/llvm/lib/Transforms/Utils/InlineFunction.cpp
+++ b/llvm/lib/Transforms/Utils/InlineFunction.cpp
@@ -1789,6 +1789,9 @@
IRBuilder<> builder(&FirstNewBlock->front());
for (unsigned ai = 0, ae = IFI.StaticAllocas.size(); ai != ae; ++ai) {
AllocaInst *AI = IFI.StaticAllocas[ai];
+ // Don't mark swifterror allocas. They can't have bitcast uses.
+ if (AI->isSwiftError())
+ continue;
// If the alloca is already scoped to something smaller than the whole
// function then there's no need to add redundant, less accurate markers.
diff --git a/llvm/test/Transforms/Inline/lifetime.ll b/llvm/test/Transforms/Inline/lifetime.ll
index 12c433b..fc209cc 100644
--- a/llvm/test/Transforms/Inline/lifetime.ll
+++ b/llvm/test/Transforms/Inline/lifetime.ll
@@ -98,3 +98,20 @@
; CHECK: ret void
ret void
}
+
+%swift.error = type opaque
+
+define void @helper_swifterror_alloca() {
+entry:
+ %swifterror = alloca swifterror %swift.error*, align 8
+ store %swift.error* null, %swift.error** %swifterror, align 8
+ ret void
+}
+
+define void @test_swifterror_alloca() {
+; CHECK-LABEL: @test_swifterror_alloca(
+; CHECK-NOT: lifetime
+ call void @helper_swifterror_alloca()
+; CHECK: ret void
+ ret void
+}