[llvm] r354504 - Add test case.

[Nirav Dave via llvm-commits]

Author: niravd
Date: Wed Feb 20 11:07:55 2019
New Revision: 354504

URL: http://llvm.org/viewvc/llvm-project?rev=354504&view=rev
Log:
Add test case.

Added:
    llvm/trunk/test/CodeGen/X86/pr40631_deadstore_elision.ll

Added: llvm/trunk/test/CodeGen/X86/pr40631_deadstore_elision.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/pr40631_deadstore_elision.ll?rev=354504&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/pr40631_deadstore_elision.ll (added)
+++ llvm/trunk/test/CodeGen/X86/pr40631_deadstore_elision.ll Wed Feb 20 11:07:55 2019
@@ -0,0 +1,71 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -o - %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
+
+%struct.sk_buff = type { i8* }
+%struct.xt_action_param = type { i8*, i8*, i8*, i32, i32, i8 }
+
+define i32 @ipt_do_table(%struct.sk_buff* noalias nocapture readonly) {
+; CHECK-LABEL: ipt_do_table:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    subq $40, %rsp
+; CHECK-NEXT:    .cfi_def_cfa_offset 48
+; CHECK-NEXT:    movq (%rdi), %rax
+; CHECK-NEXT:    xorps %xmm0, %xmm0
+; CHECK-NEXT:    movaps %xmm0, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movq $0, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movaps {{.*#+}} xmm0 = [12297829382473034410,12297829382473034410]
+; CHECK-NEXT:    movaps %xmm0, (%rsp)
+; CHECK-NEXT:    movabsq $-6148914691236517206, %rcx # imm = 0xAAAAAAAAAAAAAAAA
+; CHECK-NEXT:    movq %rcx, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movq %rcx, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movb $-86, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movzwl 2(%rax), %ecx
+; CHECK-NEXT:    andl $8191, %ecx # imm = 0x1FFF
+; CHECK-NEXT:    movl %ecx, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movzbl (%rax), %eax
+; CHECK-NEXT:    andl $15, %eax
+; CHECK-NEXT:    movl %eax, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movb $0, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movq %rsp, %rdi
+; CHECK-NEXT:    callq use_it
+; CHECK-NEXT:    addq $40, %rsp
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    retq
+  %2 = alloca %struct.xt_action_param, align 16
+  %3 = getelementptr inbounds %struct.sk_buff, %struct.sk_buff* %0, i64 0, i32 0
+  %4 = load i8*, i8** %3, align 8
+  %5 = bitcast %struct.xt_action_param* %2 to i8*
+  call void @llvm.lifetime.start.p0i8(i64 40, i8* nonnull %5) #3
+  call void @llvm.memset.p0i8.i64(i8* nonnull align 16 %5, i8 0, i64 40, i1 false)
+  %6 = bitcast %struct.xt_action_param* %2 to <2 x i8*>*
+  store <2 x i8*> <i8* inttoptr (i64 -6148914691236517206 to i8*), i8* inttoptr (i64 -6148914691236517206 to i8*)>, <2 x i8*>* %6, align 16
+  %7 = getelementptr inbounds %struct.xt_action_param, %struct.xt_action_param* %2, i64 0, i32 2
+  store i8* inttoptr (i64 -6148914691236517206 to i8*), i8** %7, align 16
+  %8 = getelementptr inbounds %struct.xt_action_param, %struct.xt_action_param* %2, i64 0, i32 3
+  %9 = getelementptr inbounds %struct.xt_action_param, %struct.xt_action_param* %2, i64 0, i32 4
+  %10 = getelementptr inbounds %struct.xt_action_param, %struct.xt_action_param* %2, i64 0, i32 5
+  %11 = getelementptr inbounds i8, i8* %4, i64 2
+  %12 = bitcast i8* %11 to i16*
+  %13 = bitcast i32* %8 to i8*
+  call void @llvm.memset.p0i8.i64(i8* nonnull align 8 %13, i8 -86, i64 9, i1 false)
+  %14 = load i16, i16* %12, align 2
+  %15 = and i16 %14, 8191
+  %16 = zext i16 %15 to i32
+  store i32 %16, i32* %8, align 8
+  %17 = load i8, i8* %4, align 2
+  %18 = and i8 %17, 15
+  %19 = zext i8 %18 to i32
+  store i32 %19, i32* %9, align 4
+  store i8 0, i8* %10, align 16
+  %20 = call i32 @use_it(%struct.xt_action_param* nonnull %2)
+  call void @llvm.lifetime.end.p0i8(i64 40, i8* nonnull %5)
+  ret i32 %20
+}
+
+declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
+
+declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1)
+
+declare dso_local i32 @use_it(%struct.xt_action_param*) local_unnamed_addr
+
+declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)