xref: /llvm-project/llvm/test/CodeGen/PowerPC/huge-frame-size.ll (revision ca076f7a63f6a80e2e38315ec462be354b196b8d)
1; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-linux-gnu < %s \
2; RUN:   2>&1 | FileCheck --check-prefix=CHECK-LE %s
3; RUN: llc -verify-machineinstrs -mtriple=powerpc64-ibm-aix-xcoff < %s \
4; RUN:   2>&1 | FileCheck --check-prefix=CHECK-BE %s
5
6; CHECK-NOT: warning: {{.*}} stack frame size ({{.*}}) exceeds limit (4294967295) in function 'foo'
7; CHECK-NOT: warning: {{.*}} stack frame size ({{.*}}) exceeds limit (4294967295) in function 'large_stack'
8; CHECK: warning: {{.*}} stack frame size ({{.*}}) exceeds limit (4294967295) in function 'warn_on_large_stack'
9
10declare void @bar(ptr)
11
12define void @foo(i8 %x) {
13; CHECK-LE-LABEL: foo:
14; CHECK-LE:       # %bb.0: # %entry
15; CHECK-LE-NEXT:    lis 0, -1
16; CHECK-LE-NEXT:    ori 0, 0, 65534
17; CHECK-LE-NEXT:    sldi 0, 0, 32
18; CHECK-LE-NEXT:    oris 0, 0, 65535
19; CHECK-LE-NEXT:    ori 0, 0, 65504
20; CHECK-LE-NEXT:    stdux 1, 1, 0
21; CHECK-LE-NEXT:    .cfi_def_cfa_offset 4294967328
22; CHECK-LE-NEXT:    li 4, 1
23; CHECK-LE-NEXT:    addi 5, 1, 32
24; CHECK-LE-NEXT:    stb 3, 32(1)
25; CHECK-LE-NEXT:    rldic 4, 4, 31, 32
26; CHECK-LE-NEXT:    stbx 3, 5, 4
27; CHECK-LE-NEXT:    li 4, -1
28; CHECK-LE-NEXT:    rldic 4, 4, 0, 32
29; CHECK-LE-NEXT:    stbx 3, 5, 4
30; CHECK-LE-NEXT:    ld 1, 0(1)
31; CHECK-LE-NEXT:    blr
32;
33; CHECK-BE-LABEL: foo:
34; CHECK-BE:       # %bb.0: # %entry
35; CHECK-BE-NEXT:    lis 0, -1
36; CHECK-BE-NEXT:    ori 0, 0, 65534
37; CHECK-BE-NEXT:    sldi 0, 0, 32
38; CHECK-BE-NEXT:    oris 0, 0, 65535
39; CHECK-BE-NEXT:    ori 0, 0, 65488
40; CHECK-BE-NEXT:    stdux 1, 1, 0
41; CHECK-BE-NEXT:    li 4, 1
42; CHECK-BE-NEXT:    addi 5, 1, 48
43; CHECK-BE-NEXT:    rldic 4, 4, 31, 32
44; CHECK-BE-NEXT:    stb 3, 48(1)
45; CHECK-BE-NEXT:    stbx 3, 5, 4
46; CHECK-BE-NEXT:    li 4, -1
47; CHECK-BE-NEXT:    rldic 4, 4, 0, 32
48; CHECK-BE-NEXT:    stbx 3, 5, 4
49; CHECK-BE-NEXT:    ld 1, 0(1)
50; CHECK-BE-NEXT:    blr
51entry:
52  %a = alloca i8, i64 4294967296, align 16
53  %c = getelementptr i8, ptr %a, i64 2147483648
54  %d = getelementptr i8, ptr %a, i64 4294967295
55  store volatile i8 %x, ptr %a
56  store volatile i8 %x, ptr %c
57  store volatile i8 %x, ptr %d
58  ret void
59}
60
61define ptr @large_stack() {
62  %s = alloca [281474976710656 x i8], align 1
63  %e = getelementptr i8, ptr %s, i64 0
64  ret ptr %e
65}
66
67define ptr @warn_on_large_stack() "warn-stack-size"="4294967295" {
68  %s = alloca [281474976710656 x i8], align 1
69  %e = getelementptr i8, ptr %s, i64 0
70  ret ptr %e
71}
72