1 files changed, 151 insertions, 0 deletions
diff --git a/test/CodeGen/PowerPC/stack-realign.ll b/test/CodeGen/PowerPC/stack-realign.ll
new file mode 100644
index 0000000000..7bd28f6a7c
--- /dev/null
+++ b/test/CodeGen/PowerPC/stack-realign.ll
@@ -0,0 +1,151 @@
+; RUN: llc -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 < %s | FileCheck %s
+; RUN: llc -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -disable-fp-elim < %s | FileCheck -check-prefix=CHECK-FP %s
+target 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"
+target triple = "powerpc64-unknown-linux-gnu"
+
+%struct.s = type { i32, i32 }
+
+declare void @bar(i32*)
+
+define void @goo(%struct.s* byval nocapture readonly %a) {
+entry:
+  %x = alloca [2 x i32], align 32
+  %a1 = getelementptr inbounds %struct.s* %a, i64 0, i32 0
+  %0 = load i32* %a1, align 4, !tbaa !0
+  %arrayidx = getelementptr inbounds [2 x i32]* %x, i64 0, i64 0
+  store i32 %0, i32* %arrayidx, align 32, !tbaa !0
+  %b = getelementptr inbounds %struct.s* %a, i64 0, i32 1
+  %1 = load i32* %b, align 4, !tbaa !0
+  %arrayidx2 = getelementptr inbounds [2 x i32]* %x, i64 0, i64 1
+  store i32 %1, i32* %arrayidx2, align 4, !tbaa !0
+  call void @bar(i32* %arrayidx)
+  ret void
+}
+
+; CHECK-LABEL: @goo
+
+; CHECK-DAG: mflr 0
+; CHECK-DAG: rldicl [[REG:[0-9]+]], 1, 0, 59
+; CHECK-DAG: std 31, -8(1)
+; CHECK-DAG: mr 31, 1
+; CHECK-DAG: std 0, 16(1)
+; CHECK-DAG: subfic 0, [[REG]], -160
+; CHECK: stdux 1, 1, 0
+
+; CHECK: .cfi_offset r31, -8
+; CHECK: .cfi_offset lr, 16
+
+; CHECK: std 3, 48(31)
+
+; CHECK: ld 1, 0(1)
+; CHECK-DAG: ld 0, 16(1)
+; CHECK-DAG: ld 31, -8(1)
+; CHECK-DAG: mtlr 0
+; CHECK: blr
+
+; CHECK-FP-LABEL: @goo
+
+; CHECK-FP-DAG: mflr 0
+; CHECK-FP-DAG: rldicl [[REG:[0-9]+]], 1, 0, 59
+; CHECK-FP-DAG: std 31, -8(1)
+; CHECK-FP-DAG: std 30, -16(1)
+; CHECK-FP-DAG: mr 30, 1
+; CHECK-FP-DAG: std 0, 16(1)
+; CHECK-FP-DAG: subfic 0, [[REG]], -160
+; CHECK-FP: stdux 1, 1, 0
+
+; CHECK-FP: .cfi_offset r31, -8
+; CHECK-FP: .cfi_offset r30, -16
+; CHECK-FP: .cfi_offset lr, 16
+
+; CHECK-FP: mr 31, 1
+
+; CHECK-FP: std 3, 48(30)
+
+; CHECK-FP: ld 1, 0(1)
+; CHECK-FP-DAG: ld 0, 16(1)
+; CHECK-FP-DAG: ld 31, -8(1)
+; CHECK-FP-DAG: ld 30, -16(1)
+; CHECK-FP-DAG: mtlr 0
+; CHECK-FP: blr
+
+; The large-frame-size case.
+define void @hoo(%struct.s* byval nocapture readonly %a) {
+entry:
+  %x = alloca [200000 x i32], align 32
+  %a1 = getelementptr inbounds %struct.s* %a, i64 0, i32 0
+  %0 = load i32* %a1, align 4, !tbaa !0
+  %arrayidx = getelementptr inbounds [200000 x i32]* %x, i64 0, i64 0
+  store i32 %0, i32* %arrayidx, align 32, !tbaa !0
+  %b = getelementptr inbounds %struct.s* %a, i64 0, i32 1
+  %1 = load i32* %b, align 4, !tbaa !0
+  %arrayidx2 = getelementptr inbounds [200000 x i32]* %x, i64 0, i64 1
+  store i32 %1, i32* %arrayidx2, align 4, !tbaa !0
+  call void @bar(i32* %arrayidx)
+  ret void
+}
+
+; CHECK-LABEL: @hoo
+
+; CHECK-DAG: lis [[REG1:[0-9]+]], -13
+; CHECK-DAG: rldicl [[REG3:[0-9]+]], 1, 0, 59
+; CHECK-DAG: mflr 0
+; CHECK-DAG: ori [[REG2:[0-9]+]], [[REG1]], 51808
+; CHECK-DAG: std 31, -8(1)
+; CHECK-DAG: mr 31, 1
+; CHECK-DAG: std 0, 16(1)
+; CHECK-DAG: subfc 0, [[REG3]], [[REG2]]
+; CHECK: stdux 1, 1, 0
+
+; CHECK: blr
+
+; Make sure that the FP save area is still allocated correctly relative to
+; where r30 is saved.
+define void @loo(%struct.s* byval nocapture readonly %a) {
+entry:
+  %x = alloca [2 x i32], align 32
+  %a1 = getelementptr inbounds %struct.s* %a, i64 0, i32 0
+  %0 = load i32* %a1, align 4, !tbaa !0
+  %arrayidx = getelementptr inbounds [2 x i32]* %x, i64 0, i64 0
+  store i32 %0, i32* %arrayidx, align 32, !tbaa !0
+  %b = getelementptr inbounds %struct.s* %a, i64 0, i32 1
+  %1 = load i32* %b, align 4, !tbaa !0
+  %arrayidx2 = getelementptr inbounds [2 x i32]* %x, i64 0, i64 1
+  store i32 %1, i32* %arrayidx2, align 4, !tbaa !0
+  call void @bar(i32* %arrayidx)
+  call void asm sideeffect "", "~{f30}"() nounwind
+  ret void
+}
+
+; CHECK-LABEL: @loo
+
+; CHECK-DAG: mflr 0
+; CHECK-DAG: rldicl [[REG:[0-9]+]], 1, 0, 59
+; CHECK-DAG: std 31, -24(1)
+; CHECK-DAG: mr 31, 1
+; CHECK-DAG: std 0, 16(1)
+; CHECK-DAG: subfic 0, [[REG]], -160
+; CHECK: stdux 1, 1, 0
+
+; CHECK: stfd 30, -16(31)
+
+; CHECK: blr
+
+; CHECK-FP-LABEL: @loo
+
+; CHECK-FP-DAG: mflr 0
+; CHECK-FP-DAG: rldicl [[REG:[0-9]+]], 1, 0, 59
+; CHECK-FP-DAG: std 31, -24(1)
+; CHECK-FP-DAG: std 30, -32(1)
+; CHECK-FP-DAG: mr 30, 1
+; CHECK-FP-DAG: std 0, 16(1)
+; CHECK-FP-DAG: subfic 0, [[REG]], -192
+; CHECK-FP: stdux 1, 1, 0
+
+; CHECK-FP: stfd 30, -16(30)
+
+; CHECK-FP: blr
+
+!0 = metadata !{metadata !"int", metadata !1}
+!1 = metadata !{metadata !"omnipotent char", metadata !2}
+!2 = metadata !{metadata !"Simple C/C++ TBAA"}