vendor/llvm/llvm-trunk-r304659

1 files changed, 149 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/scavenging.mir b/test/CodeGen/PowerPC/scavenging.mir
new file mode 100644
index 000000000000..8b5c26230bc6
--- /dev/null
+++ b/test/CodeGen/PowerPC/scavenging.mir
@@ -0,0 +1,149 @@
+# RUN: llc -mtriple=ppc64-- -run-pass scavenger-test -verify-machineinstrs -o - %s | FileCheck %s
+---
+# CHECK-LABEL: name: noscav0
+name: noscav0
+tracksRegLiveness: true
+body: |
+  bb.0:
+    ; CHECK: [[REG0:%r[0-9]+]] = LI 42
+    ; CHECK-NEXT: NOP implicit [[REG0]]
+    %0 : gprc = LI 42
+    NOP implicit %0
+
+    ; CHECK: [[REG1:%r[0-9]+]] = LI 42
+    ; CHECK-NEXT: NOP
+    ; CHECK-NEXT: NOP implicit [[REG1]]
+    ; CHECK-NEXT: NOP
+    ; CHECK-NEXT: NOP implicit [[REG1]]
+    %1 : gprc = LI 42
+    NOP
+    NOP implicit %1
+    NOP
+    NOP implicit %1
+
+    ; CHECK: [[REG2:%r[0-9]+]] = LI 42
+    ; CHECK-NEXT: NOP implicit [[REG2]]
+    %2 : gprc = LI 42
+    NOP implicit %2
+
+    %x0 = IMPLICIT_DEF
+    %x1 = IMPLICIT_DEF
+    %x2 = IMPLICIT_DEF
+    %x3 = IMPLICIT_DEF
+    %x4 = IMPLICIT_DEF
+    %x27 = IMPLICIT_DEF
+    %x28 = IMPLICIT_DEF
+    %x29 = IMPLICIT_DEF
+    %x30 = IMPLICIT_DEF
+
+    ; CHECK-NOT: %x0 = LI 42
+    ; CHECK-NOT: %x1 = LI 42
+    ; CHECK-NOT: %x2 = LI 42
+    ; CHECK-NOT: %x3 = LI 42
+    ; CHECK-NOT: %x4 = LI 42
+    ; CHECK-NOT: %x5 = LI 42
+    ; CHECK-NOT: %x27 = LI 42
+    ; CHECK-NOT: %x28 = LI 42
+    ; CHECK-NOT: %x29 = LI 42
+    ; CHECK-NOT: %x30 = LI 42
+    ; CHECK: [[REG3:%r[0-9]+]] = LI 42
+    ; CHECK-NEXT: %x5 = IMPLICIT_DEF
+    ; CHECK-NEXT: NOP implicit [[REG2]]
+    ; CHECK-NEXT: NOP implicit [[REG3]]
+    %3 : gprc = LI 42
+    %x5 = IMPLICIT_DEF
+    NOP implicit %2
+    NOP implicit %3
+
+    NOP implicit %x0
+    NOP implicit %x1
+    NOP implicit %x2
+    NOP implicit %x3
+    NOP implicit %x4
+    NOP implicit %x5
+    NOP implicit %x27
+    NOP implicit %x28
+    NOP implicit %x29
+    NOP implicit %x30
+...
+---
+# CHECK-LABEL: name: scav0
+name: scav0
+tracksRegLiveness: true
+stack:
+  # variable-sized object should be a reason to reserve an emergency spillslot
+  # in the RegScavenger
+  - { id: 0, type: variable-sized, offset: -32, alignment: 1 }
+body: |
+  bb.0:
+    %x0 = IMPLICIT_DEF
+    %x1 = IMPLICIT_DEF
+    %x2 = IMPLICIT_DEF
+    %x3 = IMPLICIT_DEF
+    %x4 = IMPLICIT_DEF
+    %x5 = IMPLICIT_DEF
+    %x6 = IMPLICIT_DEF
+    %x7 = IMPLICIT_DEF
+    %x8 = IMPLICIT_DEF
+    %x9 = IMPLICIT_DEF
+    %x10 = IMPLICIT_DEF
+    %x11 = IMPLICIT_DEF
+    %x12 = IMPLICIT_DEF
+    %x13 = IMPLICIT_DEF
+    %x14 = IMPLICIT_DEF
+    %x15 = IMPLICIT_DEF
+    %x16 = IMPLICIT_DEF
+    %x17 = IMPLICIT_DEF
+    %x18 = IMPLICIT_DEF
+    %x19 = IMPLICIT_DEF
+    %x20 = IMPLICIT_DEF
+    %x21 = IMPLICIT_DEF
+    %x22 = IMPLICIT_DEF
+    %x23 = IMPLICIT_DEF
+    %x24 = IMPLICIT_DEF
+    %x25 = IMPLICIT_DEF
+    %x26 = IMPLICIT_DEF
+    %x27 = IMPLICIT_DEF
+    %x28 = IMPLICIT_DEF
+    %x29 = IMPLICIT_DEF
+    %x30 = IMPLICIT_DEF
+
+    ; CHECK: STD killed [[SPILLEDREG:%x[0-9]+]]
+    ; CHECK: [[SPILLEDREG]] = LI8 42
+    ; CHECK: NOP implicit [[SPILLEDREG]]
+    ; CHECK: [[SPILLEDREG]] = LD
+    %0 : g8rc = LI8 42
+    NOP implicit %0
+
+    NOP implicit %x0
+    NOP implicit %x1
+    NOP implicit %x2
+    NOP implicit %x3
+    NOP implicit %x4
+    NOP implicit %x5
+    NOP implicit %x6
+    NOP implicit %x7
+    NOP implicit %x8
+    NOP implicit %x9
+    NOP implicit %x10
+    NOP implicit %x11
+    NOP implicit %x12
+    NOP implicit %x13
+    NOP implicit %x14
+    NOP implicit %x15
+    NOP implicit %x16
+    NOP implicit %x17
+    NOP implicit %x18
+    NOP implicit %x19
+    NOP implicit %x20
+    NOP implicit %x21
+    NOP implicit %x22
+    NOP implicit %x23
+    NOP implicit %x24
+    NOP implicit %x25
+    NOP implicit %x26
+    NOP implicit %x27
+    NOP implicit %x28
+    NOP implicit %x29
+    NOP implicit %x30
+...