xref: /llvm-project/llvm/test/CodeGen/PowerPC/2010-02-12-saveCR.ll (revision 427fb35192f1f7bb694a5910b05abc5925a798b2)
1; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu -break-anti-dependencies=none | FileCheck %s
2; ModuleID = 'hh.c'
3;;;;; target datalayout = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f128:64:128-n32"
4target triple = "powerpc-unknown-linux-gnu.6"
5
6define void @foo() nounwind {
7entry:
8; Note that part of what is being checked here is proper register reuse.
9; CHECK: mfcr [[T1:[0-9]+]]
10; CHECK-DAG: sub 0, 1, 0
11; CHECK-DAG: ori [[T2:[0-9]+]], [[T2]], 34492
12; CHECK-DAG: stwx [[T1]], 1, [[T2]]
13; CHECK-DAG: addi 3, 1, 28
14; CHECK: bl bar
15  %x = alloca [100000 x i8]                       ; <ptr> [#uses=1]
16  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
17  call void @bar(ptr %x) nounwind
18  call void asm sideeffect "", "~{cr2},~{cr3}"() nounwind
19  br label %return
20
21return:                                           ; preds = %entry
22; CHECK: ori [[T2]], [[T2]], 34492
23; CHECK: lwzx [[T1]], 1, [[T2]]
24; CHECK: mtcrf 32, [[T1]]
25; CHECK: mtcrf 16, [[T1]]
26  ret void
27}
28
29declare void @bar(ptr)
30