Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/CodeGen/X86/memset-sse-stack-realignment.ll

@@ -0,0 +1,77 @@
+; Make sure that we realign the stack. Mingw32 uses 4 byte stack alignment, we
+; need 16 bytes for SSE and 32 bytes for AVX.
+
+; RUN: llc < %s -mtriple=i386-pc-mingw32 -mcpu=pentium2 | FileCheck %s -check-prefix=NOSSE
+; RUN: llc < %s -mtriple=i386-pc-mingw32 -mcpu=pentium3 | FileCheck %s -check-prefix=SSE1
+; RUN: llc < %s -mtriple=i386-pc-mingw32 -mcpu=yonah | FileCheck %s -check-prefix=SSE2
+; RUN: llc < %s -mtriple=i386-pc-mingw32 -mcpu=corei7-avx | FileCheck %s -check-prefix=AVX1
+; RUN: llc < %s -mtriple=i386-pc-mingw32 -mcpu=core-avx2 | FileCheck %s -check-prefix=AVX2
+
+define void @test1(i32 %t) nounwind {
+  %tmp1210 = alloca i8, i32 32, align 4
+  call void @llvm.memset.p0i8.i64(i8* %tmp1210, i8 0, i64 32, i32 4, i1 false)
+  %x = alloca i8, i32 %t
+  call void @dummy(i8* %x)
+  ret void
+
+; NOSSE-LABEL: test1:
+; NOSSE-NOT: and
+; NOSSE: movl $0
+
+; SSE1-LABEL: test1:
+; SSE1: andl $-16
+; SSE1: movl %esp, %esi
+; SSE1: movaps
+
+; SSE2-LABEL: test1:
+; SSE2: andl $-16
+; SSE2: movl %esp, %esi
+; SSE2: movaps
+
+; AVX1-LABEL: test1:
+; AVX1: andl $-32
+; AVX1: movl %esp, %esi
+; AVX1: vmovaps %ymm
+
+; AVX2-LABEL: test1:
+; AVX2: andl $-32
+; AVX2: movl %esp, %esi
+; AVX2: vmovaps %ymm
+
+}
+
+define void @test2(i32 %t) nounwind {
+  %tmp1210 = alloca i8, i32 16, align 4
+  call void @llvm.memset.p0i8.i64(i8* %tmp1210, i8 0, i64 16, i32 4, i1 false)
+  %x = alloca i8, i32 %t
+  call void @dummy(i8* %x)
+  ret void
+
+; NOSSE-LABEL: test2:
+; NOSSE-NOT: and
+; NOSSE: movl $0
+
+; SSE1-LABEL: test2:
+; SSE1: andl $-16
+; SSE1: movl %esp, %esi
+; SSE1: movaps
+
+; SSE2-LABEL: test2:
+; SSE2: andl $-16
+; SSE2: movl %esp, %esi
+; SSE2: movaps
+
+; AVX1-LABEL: test2:
+; AVX1: andl $-16
+; AVX1: movl %esp, %esi
+; AVX1: vmovaps %xmm
+
+; AVX2-LABEL: test2:
+; AVX2: andl $-16
+; AVX2: movl %esp, %esi
+; AVX2: vmovaps %xmm
+}
+
+declare void @dummy(i8*)
+
+declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind