[ARM] GlobalISel: Support G_OR

Same as the other binary operators:
- legalize to 32 bits
- map to GPRs
- select ORRrr thanks to TableGen'erated code

llvm-svn: 304890

4 files changed, 168 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/GlobalISel/arm-instruction-select.mir b/llvm/test/CodeGen/ARM/GlobalISel/arm-instruction-select.mir
index 69bc68938a4..ef526c6f635 100644
--- a/llvm/test/CodeGen/ARM/GlobalISel/arm-instruction-select.mir
+++ b/llvm/test/CodeGen/ARM/GlobalISel/arm-instruction-select.mir
@@ -29,6 +29,7 @@
   define void @test_udiv_s32() #2 { ret void }
 
   define void @test_and_s32() { ret void }
+  define void @test_or_s32() { ret void }
 
   define void @test_load_from_stack() { ret void }
   define void @test_load_f32() #0 { ret void }
@@ -818,6 +819,39 @@ body:             |
     ; CHECK: BX_RET 14, _, implicit %r0
 ...
 ---
+name:            test_or_s32
+# CHECK-LABEL: name: test_or_s32
+legalized:       true
+regBankSelected: true
+selected:        false
+# CHECK: selected: true
+registers:
+  - { id: 0, class: gprb }
+  - { id: 1, class: gprb }
+  - { id: 2, class: gprb }
+# CHECK: id: 0, class: gpr
+# CHECK: id: 1, class: gpr
+# CHECK: id: 2, class: gpr
+body:             |
+  bb.0:
+    liveins: %r0, %r1
+
+    %0(s32) = COPY %r0
+    ; CHECK: [[VREGX:%[0-9]+]] = COPY %r0
+
+    %1(s32) = COPY %r1
+    ; CHECK: [[VREGY:%[0-9]+]] = COPY %r1
+
+    %2(s32) = G_OR %0, %1
+    ; CHECK: [[VREGRES:%[0-9]+]] = ORRrr [[VREGX]], [[VREGY]], 14, _
+
+    %r0 = COPY %2(s32)
+    ; CHECK: %r0 = COPY [[VREGRES]]
+
+    BX_RET 14, _, implicit %r0
+    ; CHECK: BX_RET 14, _, implicit %r0
+...
+---
 name:            test_load_from_stack
 # CHECK-LABEL: name: test_load_from_stack
 legalized:       true
diff --git a/llvm/test/CodeGen/ARM/GlobalISel/arm-isel.ll b/llvm/test/CodeGen/ARM/GlobalISel/arm-isel.ll
index e7711abddcf..c6d8fc9d2cc 100644
--- a/llvm/test/CodeGen/ARM/GlobalISel/arm-isel.ll
+++ b/llvm/test/CodeGen/ARM/GlobalISel/arm-isel.ll
@@ -180,6 +180,33 @@ entry:
   ret i32 %sum
 }
 
+define i8 @test_or_i8(i8 %x, i8 %y) {
+; CHECK-LABEL: test_or_i8:
+; CHECK: orr r0, r0, r1
+; CHECK: bx lr
+entry:
+  %sum = or i8 %x, %y
+  ret i8 %sum
+}
+
+define i16 @test_or_i16(i16 %x, i16 %y) {
+; CHECK-LABEL: test_or_i16:
+; CHECK: orr r0, r0, r1
+; CHECK: bx lr
+entry:
+  %sum = or i16 %x, %y
+  ret i16 %sum
+}
+
+define i32 @test_or_i32(i32 %x, i32 %y) {
+; CHECK-LABEL: test_or_i32:
+; CHECK: orr r0, r0, r1
+; CHECK: bx lr
+entry:
+  %sum = or i32 %x, %y
+  ret i32 %sum
+}
+
 define i32 @test_stack_args_i32(i32 %p0, i32 %p1, i32 %p2, i32 %p3, i32 %p4, i32 %p5) {
 ; CHECK-LABEL: test_stack_args_i32:
 ; CHECK: add [[P5ADDR:r[0-9]+]], sp, #4
diff --git a/llvm/test/CodeGen/ARM/GlobalISel/arm-legalizer.mir b/llvm/test/CodeGen/ARM/GlobalISel/arm-legalizer.mir
index 91c583719b8..e306d9a896a 100644
--- a/llvm/test/CodeGen/ARM/GlobalISel/arm-legalizer.mir
+++ b/llvm/test/CodeGen/ARM/GlobalISel/arm-legalizer.mir
@@ -19,6 +19,10 @@
   define void @test_and_s16() { ret void }
   define void @test_and_s32() { ret void }
 
+  define void @test_or_s8() { ret void }
+  define void @test_or_s16() { ret void }
+  define void @test_or_s32() { ret void }
+
   define void @test_load_from_stack() { ret void }
   define void @test_legal_loads() #0 { ret void }
   define void @test_legal_stores() #0 { ret void }
@@ -381,6 +385,82 @@ body:             |
 
 ...
 ---
+name:            test_or_s8
+# CHECK-LABEL: name: test_or_s8
+legalized:       false
+# CHECK: legalized: true
+regBankSelected: false
+selected:        false
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+body:             |
+  bb.0:
+    liveins: %r0, %r1
+
+    %0(s8) = COPY %r0
+    %1(s8) = COPY %r1
+    %2(s8) = G_OR %0, %1
+    ; G_OR with s8 should widen
+    ; CHECK: {{%[0-9]+}}(s32) = G_OR {{%[0-9]+, %[0-9]+}}
+    ; CHECK-NOT: {{%[0-9]+}}(s8) = G_OR {{%[0-9]+, %[0-9]+}}
+    %r0 = COPY %2(s8)
+    BX_RET 14, _, implicit %r0
+...
+---
+name:            test_or_s16
+# CHECK-LABEL: name: test_or_s16
+legalized:       false
+# CHECK: legalized: true
+regBankSelected: false
+selected:        false
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+body:             |
+  bb.0:
+    liveins: %r0, %r1
+
+    %0(s16) = COPY %r0
+    %1(s16) = COPY %r1
+    %2(s16) = G_OR %0, %1
+    ; G_OR with s16 should widen
+    ; CHECK: {{%[0-9]+}}(s32) = G_OR {{%[0-9]+, %[0-9]+}}
+    ; CHECK-NOT: {{%[0-9]+}}(s16) = G_OR {{%[0-9]+, %[0-9]+}}
+    %r0 = COPY %2(s16)
+    BX_RET 14, _, implicit %r0
+
+...
+---
+name:            test_or_s32
+# CHECK-LABEL: name: test_or_s32
+legalized:       false
+# CHECK: legalized: true
+regBankSelected: false
+selected:        false
+tracksRegLiveness: true
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+body:             |
+  bb.0:
+    liveins: %r0, %r1
+
+    %0(s32) = COPY %r0
+    %1(s32) = COPY %r1
+    %2(s32) = G_OR %0, %1
+    ; G_OR with s32 is legal, so we should find it unchanged in the output
+    ; CHECK: {{%[0-9]+}}(s32) = G_OR {{%[0-9]+, %[0-9]+}}
+    %r0 = COPY %2(s32)
+    BX_RET 14, _, implicit %r0
+
+...
+---
 name:            test_load_from_stack
 # CHECK-LABEL: name: test_load_from_stack
 legalized:       false
diff --git a/llvm/test/CodeGen/ARM/GlobalISel/arm-regbankselect.mir b/llvm/test/CodeGen/ARM/GlobalISel/arm-regbankselect.mir
index be7c3c312fd..3a4b96bb6f1 100644
--- a/llvm/test/CodeGen/ARM/GlobalISel/arm-regbankselect.mir
+++ b/llvm/test/CodeGen/ARM/GlobalISel/arm-regbankselect.mir
@@ -17,6 +17,7 @@
   define void @test_udiv_s32() #1 { ret void }
 
   define void @test_and_s32() { ret void}
+  define void @test_or_s32() { ret void}
 
   define void @test_loads() #0 { ret void }
   define void @test_stores() #0 { ret void }
@@ -442,6 +443,32 @@ body:             |
 
 ...
 ---
+name:            test_or_s32
+# CHECK-LABEL: name: test_or_s32
+legalized:       true
+regBankSelected: false
+selected:        false
+# CHECK: registers:
+# CHECK: - { id: 0, class: gprb, preferred-register: '' }
+# CHECK: - { id: 1, class: gprb, preferred-register: '' }
+# CHECK: - { id: 2, class: gprb, preferred-register: '' }
+
+registers:
+  - { id: 0, class: _ }
+  - { id: 1, class: _ }
+  - { id: 2, class: _ }
+body:             |
+  bb.0:
+    liveins: %r0, %r1
+
+    %0(s32) = COPY %r0
+    %1(s32) = COPY %r1
+    %2(s32) = G_OR %0, %1
+    %r0 = COPY %2(s32)
+    BX_RET 14, _, implicit %r0
+
+...
+---
 name:            test_loads
 # CHECK-LABEL: name: test_loads
 legalized:       true