Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/CodeGen/PowerPC/2016-04-17-combine.ll

@@ -0,0 +1,26 @@
+; RUN: llc -verify-machineinstrs <%s | FileCheck %s
+target datalayout = "e-m:e-i64:64-n32:64"
+target triple = "powerpc64le-unknown-linux-gnu"
+
+; PR27390 crasher
+
+%typ = type { i32, i32 }
+
+; On release builds, it doesn't crash, spewing nonsense instead.
+; To make sure it works, check that and is still alive.
+; CHECK: and
+; Also, in release, it emits a COPY from a 32-bit register to
+; a 64-bit register, which happens to be emitted as cror [!]
+; by the confused CodeGen.  Just to be sure, check there isn't one.
+; CHECK-NOT: cror
+; Function Attrs: uwtable
+define signext i32 @_Z8access_pP1Tc(%typ* %p, i8 zeroext %type) {
+  %b = getelementptr inbounds %typ, %typ* %p, i64 0, i32 1
+  %1 = load i32, i32* %b, align 4
+  %2 = ptrtoint i32* %b to i64
+  %3 = and i64 %2, -35184372088833
+  %4 = inttoptr i64 %3 to i32*
+  %_msld = load i32, i32* %4, align 4
+  %zzz = add i32 %1,  %_msld
+  ret i32 %zzz
+}