diff options
| author | Chad Rosier <mcrosier@apple.com> | 2011-10-18 05:28:00 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-10-18 05:28:00 +0000 |
| commit | fe04757f5e06ab15208ac0a2ab8d7e83c62b9f0d (patch) | |
| tree | 679d85c4d3576a429a1419196494da9ecb339d96 /test | |
| parent | 895ede819f0558574fce66cc1eca80eee2deaa4e (diff) | |
| download | llvm-fe04757f5e06ab15208ac0a2ab8d7e83c62b9f0d.tar.gz llvm-fe04757f5e06ab15208ac0a2ab8d7e83c62b9f0d.tar.bz2 llvm-fe04757f5e06ab15208ac0a2ab8d7e83c62b9f0d.tar.xz | |
Add support for dynamic stack realignment when in thumb1 mode.
rdar://10288916
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142337 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/thumb1-dynrealign.ll | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/thumb1-dynrealign.ll b/test/CodeGen/ARM/thumb1-dynrealign.ll new file mode 100644 index 0000000000..fa14fb42a3 --- /dev/null +++ b/test/CodeGen/ARM/thumb1-dynrealign.ll @@ -0,0 +1,40 @@ +; RUN: llc < %s -mtriple=thumbv6-apple-darwin | FileCheck %s + +; Normal load from SP +define void @SP(i32 %i) nounwind uwtable ssp { +entry: +; CHECK: @SP +; CHECK: push {r7, lr} +; CHECK-NEXT: mov r7, sp +; CHECK-NEXT: sub sp, #4 +; CHECK-NEXT: mov r1, sp +; CHECK-NEXT: str r0, [r1] +; CHECK-NEXT: mov r0, sp +; CHECK-NEXT: blx _SP_ +; CHECK-NEXT: add sp, #4 +; CHECK-NEXT: pop {r7, pc} + %i.addr = alloca i32, align 4 + store i32 %i, i32* %i.addr, align 4 + call void @SP_(i32* %i.addr) + ret void +} + +declare void @SP_(i32*) + +; Dynamic stack realignment +define void @FP(double %a) nounwind uwtable ssp { +entry: +; CHECK: mov r4, sp +; CHECK-NEXT: lsrs r4, r4, #3 +; CHECK-NEXT: lsls r4, r4, #3 +; CHECK-NEXT: mov sp, r4 +; Restore from FP +; CHECK: subs r4, r7, #4 +; CHECK: mov sp, r4 + %a.addr = alloca double, align 8 + store double %a, double* %a.addr, align 8 + call void @FP_(double* %a.addr) + ret void +} + +declare void @FP_(double*) |