xref: /llvm-project/llvm/test/CodeGen/PowerPC/mcm-1.ll (revision 427fb35192f1f7bb694a5910b05abc5925a798b2)
1; RUN: llc -verify-machineinstrs -mcpu=pwr7 -O0 -code-model=medium <%s | FileCheck %s
2; RUN: llc -verify-machineinstrs -mcpu=pwr7 -O0 -code-model=large <%s | FileCheck %s
3
4; Test correct code generation for medium and large code model
5; for loading and storing an external variable.
6
7target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
8target triple = "powerpc64-unknown-linux-gnu"
9
10$fi = comdat any
11
12@ei = external global i32
13@fi = global i32 0, align 4, comdat($fi)
14@gi = global i32 0, align 4, comdat($fi)
15
16define signext i32 @test_external() nounwind {
17entry:
18  %0 = load i32, ptr @ei, align 4
19  %inc = add nsw i32 %0, 1
20  store i32 %inc, ptr @ei, align 4
21  ret i32 %0
22}
23
24define i32 @load() {
25entry:
26  %0 = load i32, ptr @gi, align 4
27  %1 = load i32, ptr @fi, align 4
28  %2 = add i32 %0, %1
29  ret i32 %2
30}
31
32; CHECK-LABEL: test_external:
33; CHECK: addis [[REG1:[0-9]+]], 2, .LC[[TOCNUM:[0-9]+]]@toc@ha
34; CHECK: ld [[REG2:[0-9]+]], .LC[[TOCNUM]]@toc@l([[REG1]])
35; CHECK: lwz {{[0-9]+}}, 0([[REG2]])
36; CHECK: addis [[REG3:[0-9]+]], 2, .LC[[TOCNUM]]@toc@ha
37; CHECK: ld [[REG4:[0-9]+]], .LC[[TOCNUM]]@toc@l([[REG3]])
38; CHECK: stw {{[0-9]+}}, 0([[REG4]])
39
40
41; CHECK:      .section .toc,"aw",@progbits
42; CHECK-NEXT: .LC0:
43; CHECK-NEXT:  .tc ei[TC],ei
44; CHECK-NEXT: .LC1:
45; CHECK-NEXT:  .tc gi[TC],gi
46; CHECK-NEXT: .LC2:
47; CHECK-NEXT:  .tc fi[TC],fi
48