Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/CodeGen/ARM/2010-05-18-PostIndexBug.ll

@@ -0,0 +1,29 @@
+; RUN: llc < %s -mtriple=armv7-apple-darwin   | FileCheck %s -check-prefix=ARM
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s -check-prefix=THUMB
+; rdar://7998649
+
+%struct.foo = type { i64, i64 }
+
+define zeroext i8 @t(%struct.foo* %this, i1 %tst) noreturn optsize {
+entry:
+; ARM-LABEL:       t:
+; ARM-DAG:       mov r[[ADDR:[0-9]+]], #8
+; ARM-DAG:       mov [[VAL:r[0-9]+]], #0
+; ARM:       str [[VAL]], [r[[ADDR]]], r0
+
+; THUMB-LABEL:     t:
+; THUMB-DAG:       movs r[[ADDR:[0-9]+]], #8
+; THUMB-DAG:       movs [[VAL:r[0-9]+]], #0
+; THUMB-NOT: str {{[a-z0-9]+}}, [{{[a-z0-9]+}}], {{[a-z0-9]+}}
+; THUMB:     str [[VAL]], [r[[ADDR]]]
+  %0 = getelementptr inbounds %struct.foo, %struct.foo* %this, i32 0, i32 1 ; <i64*> [#uses=1]
+  store i32 0, i32* inttoptr (i32 8 to i32*), align 8
+  br i1 %tst, label %bb.nph96, label %bb3
+
+bb3:                                              ; preds = %entry
+  %1 = load i64, i64* %0, align 4                      ; <i64> [#uses=0]
+  ret i8 42
+
+bb.nph96:                                         ; preds = %entry
+  ret i8 3
+}