Support for HiPE-compatible code emission, patch by Yiannis Tsiouris.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175457 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 67 insertions, 0 deletions

diff --git a/test/CodeGen/X86/hipe-prologue.ll b/test/CodeGen/X86/hipe-prologue.ll
new file mode 100644
index 0000000000..ff3c5c803c
--- /dev/null
+++ b/test/CodeGen/X86/hipe-prologue.ll
@@ -0,0 +1,67 @@
+; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -verify-machineinstrs | FileCheck %s -check-prefix=X32-Linux
+; RUN: llc < %s -mtriple=x86_64-linux-gnu -verify-machineinstrs | FileCheck %s -check-prefix=X64-Linux
+
+; The HiPE compiler (i.e., the native code compiler of the Erlang/OTP system)
+; adds a custom assembly prologue in order to efficiently manipulate the stack
+; at runtime.
+
+; Just to prevent the alloca from being optimized away.
+declare void @dummy_use(i32*, i32)
+
+define {i32, i32} @test_basic(i32 %hp, i32 %p) {
+  ; X32-Linux:       test_basic:
+  ; X32-Linux-NOT:   calll inc_stack_0
+
+  ; X64-Linux:       test_basic:
+  ; X64-Linux-NOT:   callq inc_stack_0
+
+  %mem = alloca i32, i32 10
+  call void @dummy_use (i32* %mem, i32 10)
+  %1 = insertvalue {i32, i32} undef, i32 %hp, 0
+  %2 = insertvalue {i32, i32} %1, i32 %p, 1
+  ret {i32, i32} %1
+}
+
+define cc 11 {i32, i32} @test_basic_hipecc(i32 %hp, i32 %p) {
+  ; X32-Linux:       test_basic_hipecc:
+  ; X32-Linux:       leal -156(%esp), %ebx
+  ; X32-Linux-NEXT:  cmpl 76(%ebp), %ebx
+  ; X32-Linux-NEXT:  jb .LBB1_1
+
+  ; X32-Linux:       ret
+
+  ; X32-Linux:       .LBB1_1:
+  ; X32-Linux-NEXT:  calll inc_stack_0
+
+  ; X64-Linux:       test_basic_hipecc:
+  ; X64-Linux:       leaq -232(%rsp), %r14
+  ; X64-Linux-NEXT:  cmpq 144(%rbp), %r14
+  ; X64-Linux-NEXT:  jb .LBB1_1
+
+  ; X64-Linux:       ret
+
+  ; X64-Linux:       .LBB1_1:
+  ; X64-Linux-NEXT:  callq inc_stack_0
+
+  %mem = alloca i32, i32 10
+  call void @dummy_use (i32* %mem, i32 10)
+  %1 = insertvalue {i32, i32} undef, i32 %hp, 0
+  %2 = insertvalue {i32, i32} %1, i32 %p, 1
+  ret {i32, i32} %2
+}
+
+define cc 11 {i32,i32,i32} @test_nocall_hipecc(i32 %hp,i32 %p,i32 %x,i32 %y) {
+  ; X32-Linux:       test_nocall_hipecc:
+  ; X32-Linux-NOT:   calll inc_stack_0
+
+  ; X64-Linux:       test_nocall_hipecc:
+  ; X64-Linux-NOT:   callq inc_stack_0
+
+  %1 = add i32 %x, %y
+  %2 = mul i32 42, %1
+  %3 = sub i32 24, %2
+  %4 = insertvalue {i32, i32, i32} undef, i32 %hp, 0
+  %5 = insertvalue {i32, i32, i32} %4, i32 %p, 1
+  %6 = insertvalue {i32, i32, i32} %5, i32 %p, 2
+  ret {i32, i32, i32} %6
+}