Hexagon: Use absolute addressing mode loads/stores for global+offset

instead of redefining separate instructions for them.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175086 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 86 insertions, 0 deletions

diff --git a/test/CodeGen/Hexagon/gp-plus-offset-load.ll b/test/CodeGen/Hexagon/gp-plus-offset-load.ll
new file mode 100644
index 0000000000..a1b80a65f8
--- /dev/null
+++ b/test/CodeGen/Hexagon/gp-plus-offset-load.ll
@@ -0,0 +1,51 @@
+; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
+; Check that we generate load instructions with global + offset
+
+%struct.struc = type { i8, i8, i16, i32 }
+
+@foo = common global %struct.struc zeroinitializer, align 4
+
+define void @loadWord(i32 %val1, i32 %val2, i32* nocapture %ival) nounwind {
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memw(##foo{{ *}}+{{ *}}4)
+entry:
+  %cmp = icmp sgt i32 %val1, %val2
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %0 = load i32* getelementptr inbounds (%struct.struc* @foo, i32 0, i32 3), align 4
+  store i32 %0, i32* %ival, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  ret void
+}
+
+define void @loadByte(i32 %val1, i32 %val2, i8* nocapture %ival) nounwind {
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memb(##foo{{ *}}+{{ *}}1)
+entry:
+  %cmp = icmp sgt i32 %val1, %val2
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %0 = load i8* getelementptr inbounds (%struct.struc* @foo, i32 0, i32 1), align 1
+  store i8 %0, i8* %ival, align 1
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  ret void
+}
+
+define void @loadHWord(i32 %val1, i32 %val2, i16* %ival) nounwind {
+; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memh(##foo{{ *}}+{{ *}}2)
+entry:
+  %cmp = icmp sgt i32 %val1, %val2
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %0 = load i16* getelementptr inbounds (%struct.struc* @foo, i32 0, i32 2), align 2
+  store i16 %0, i16* %ival, align 2
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  ret void
+}
diff --git a/test/CodeGen/Hexagon/gp-plus-offset-store.ll b/test/CodeGen/Hexagon/gp-plus-offset-store.ll
new file mode 100644
index 0000000000..c782b30920
--- /dev/null
+++ b/test/CodeGen/Hexagon/gp-plus-offset-store.ll
@@ -0,0 +1,35 @@
+; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
+; Check that we generate store instructions with global + offset
+
+%struct.struc = type { i8, i8, i16, i32 }
+
+@foo = common global %struct.struc zeroinitializer, align 4
+
+define void @storeByte(i32 %val1, i32 %val2, i8 zeroext %ival) nounwind {
+; CHECK: memb(##foo{{ *}}+{{ *}}1){{ *}}={{ *}}r{{[0-9]+}}
+entry:
+  %cmp = icmp sgt i32 %val1, %val2
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  store i8 %ival, i8* getelementptr inbounds (%struct.struc* @foo, i32 0, i32 1), align 1
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  ret void
+}
+
+define void @storeHW(i32 %val1, i32 %val2, i16 signext %ival) nounwind {
+; CHECK: memh(##foo{{ *}}+{{ *}}2){{ *}}={{ *}}r{{[0-9]+}}
+entry:
+  %cmp = icmp sgt i32 %val1, %val2
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  store i16 %ival, i16* getelementptr inbounds (%struct.struc* @foo, i32 0, i32 2), align 2
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  ret void
+}
+