Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/test/CodeGen/X86/libcall-sret.ll

@@ -0,0 +1,39 @@
+; RUN: llc -mtriple=i686-linux-gnu -o - %s | FileCheck %s
+
+@var = global i128 0
+
+; We were trying to convert the i128 operation into a libcall, but failing to
+; perform sret demotion when we couldn't return the result in registers. Make
+; sure we marshal the return properly:
+
+define void @test_sret_libcall(i128 %l, i128 %r) {
+; CHECK-LABEL: test_sret_libcall:
+
+  ; Stack for call: 4(sret ptr), 16(i128 %l), 16(128 %r). So next logical
+  ; (aligned) place for the actual sret data is %esp + 20.
+; CHECK: leal 20(%esp), [[SRET_ADDR:%[a-z]+]]
+; CHECK: pushl 72(%esp)
+; CHECK: pushl 72(%esp)
+; CHECK: pushl 72(%esp)
+; CHECK: pushl 72(%esp)
+; CHECK: pushl 72(%esp)
+; CHECK: pushl 72(%esp)
+; CHECK: pushl 72(%esp)
+; CHECK: pushl 72(%esp)
+; CHECK: pushl [[SRET_ADDR]]
+
+; CHECK: calll __udivti3
+
+; CHECK: addl $44, %esp
+; CHECK-DAG: movl 8(%esp), [[RES0:%[a-z]+]]
+; CHECK-DAG: movl 12(%esp), [[RES1:%[a-z]+]]
+; CHECK-DAG: movl 16(%esp), [[RES2:%[a-z]+]]
+; CHECK-DAG: movl 20(%esp), [[RES3:%[a-z]+]]
+; CHECK-DAG: movl [[RES0]], var
+; CHECK-DAG: movl [[RES1]], var+4
+; CHECK-DAG: movl [[RES2]], var+8
+; CHECK-DAG: movl [[RES3]], var+12
+  %quot = udiv i128 %l, %r
+  store i128 %quot, i128* @var
+  ret void
+}