1 files changed, 230 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/insert-01.ll b/test/CodeGen/SystemZ/insert-01.ll
new file mode 100644
index 0000000..98ddf56
--- /dev/null
+++ b/test/CodeGen/SystemZ/insert-01.ll
@@ -0,0 +1,230 @@
+; Test insertions of memory into the low byte of an i32.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check a plain insertion with (or (and ... -0xff) (zext (load ....))).
+; The whole sequence can be performed by IC.
+define i32 @f1(i32 %orig, i8 *%ptr) {
+; CHECK: f1:
+; CHECK-NOT: ni
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %ptr1 = and i32 %orig, -256
+  %or = or i32 %ptr1, %ptr2
+  ret i32 %or
+}
+
+; Like f1, but with the operands reversed.
+define i32 @f2(i32 %orig, i8 *%ptr) {
+; CHECK: f2:
+; CHECK-NOT: ni
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %ptr1 = and i32 %orig, -256
+  %or = or i32 %ptr2, %ptr1
+  ret i32 %or
+}
+
+; Check a case where more bits than lower 8 are masked out of the
+; register value.  We can use IC but must keep the original mask.
+define i32 @f3(i32 %orig, i8 *%ptr) {
+; CHECK: f3:
+; CHECK: nill %r2, 65024
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %ptr1 = and i32 %orig, -512
+  %or = or i32 %ptr1, %ptr2
+  ret i32 %or
+}
+
+; Like f3, but with the operands reversed.
+define i32 @f4(i32 %orig, i8 *%ptr) {
+; CHECK: f4:
+; CHECK: nill %r2, 65024
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %ptr1 = and i32 %orig, -512
+  %or = or i32 %ptr2, %ptr1
+  ret i32 %or
+}
+
+; Check a case where the low 8 bits are cleared by a shift left.
+define i32 @f5(i32 %orig, i8 *%ptr) {
+; CHECK: f5:
+; CHECK: sll %r2, 8
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %ptr1 = shl i32 %orig, 8
+  %or = or i32 %ptr1, %ptr2
+  ret i32 %or
+}
+
+; Like f5, but with the operands reversed.
+define i32 @f6(i32 %orig, i8 *%ptr) {
+; CHECK: f6:
+; CHECK: sll %r2, 8
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %ptr1 = shl i32 %orig, 8
+  %or = or i32 %ptr2, %ptr1
+  ret i32 %or
+}
+
+; Check insertions into a constant.
+define i32 @f7(i32 %orig, i8 *%ptr) {
+; CHECK: f7:
+; CHECK: lhi %r2, 256
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %or = or i32 %ptr2, 256
+  ret i32 %or
+}
+
+; Like f7, but with the operands reversed.
+define i32 @f8(i32 %orig, i8 *%ptr) {
+; CHECK: f8:
+; CHECK: lhi %r2, 256
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ptr2 = zext i8 %val to i32
+  %or = or i32 256, %ptr2
+  ret i32 %or
+}
+
+; Check the high end of the IC range.
+define i32 @f9(i32 %orig, i8 *%src) {
+; CHECK: f9:
+; CHECK: ic %r2, 4095(%r3)
+; CHECK: br %r14
+  %ptr = getelementptr i8 *%src, i64 4095
+  %val = load i8 *%ptr
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check the next byte up, which should use ICY instead of IC.
+define i32 @f10(i32 %orig, i8 *%src) {
+; CHECK: f10:
+; CHECK: icy %r2, 4096(%r3)
+; CHECK: br %r14
+  %ptr = getelementptr i8 *%src, i64 4096
+  %val = load i8 *%ptr
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check the high end of the ICY range.
+define i32 @f11(i32 %orig, i8 *%src) {
+; CHECK: f11:
+; CHECK: icy %r2, 524287(%r3)
+; CHECK: br %r14
+  %ptr = getelementptr i8 *%src, i64 524287
+  %val = load i8 *%ptr
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check the next byte up, which needs separate address logic.
+; Other sequences besides this one would be OK.
+define i32 @f12(i32 %orig, i8 *%src) {
+; CHECK: f12:
+; CHECK: agfi %r3, 524288
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %ptr = getelementptr i8 *%src, i64 524288
+  %val = load i8 *%ptr
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check the high end of the negative ICY range.
+define i32 @f13(i32 %orig, i8 *%src) {
+; CHECK: f13:
+; CHECK: icy %r2, -1(%r3)
+; CHECK: br %r14
+  %ptr = getelementptr i8 *%src, i64 -1
+  %val = load i8 *%ptr
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check the low end of the ICY range.
+define i32 @f14(i32 %orig, i8 *%src) {
+; CHECK: f14:
+; CHECK: icy %r2, -524288(%r3)
+; CHECK: br %r14
+  %ptr = getelementptr i8 *%src, i64 -524288
+  %val = load i8 *%ptr
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check the next byte down, which needs separate address logic.
+; Other sequences besides this one would be OK.
+define i32 @f15(i32 %orig, i8 *%src) {
+; CHECK: f15:
+; CHECK: agfi %r3, -524289
+; CHECK: ic %r2, 0(%r3)
+; CHECK: br %r14
+  %ptr = getelementptr i8 *%src, i64 -524289
+  %val = load i8 *%ptr
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check that IC allows an index.
+define i32 @f16(i32 %orig, i8 *%src, i64 %index) {
+; CHECK: f16:
+; CHECK: ic %r2, 4095({{%r4,%r3|%r3,%r4}})
+; CHECK: br %r14
+  %ptr1 = getelementptr i8 *%src, i64 %index
+  %ptr2 = getelementptr i8 *%ptr1, i64 4095
+  %val = load i8 *%ptr2
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}
+
+; Check that ICY allows an index.
+define i32 @f17(i32 %orig, i8 *%src, i64 %index) {
+; CHECK: f17:
+; CHECK: icy %r2, 4096({{%r4,%r3|%r3,%r4}})
+; CHECK: br %r14
+  %ptr1 = getelementptr i8 *%src, i64 %index
+  %ptr2 = getelementptr i8 *%ptr1, i64 4096
+  %val = load i8 *%ptr2
+  %src2 = zext i8 %val to i32
+  %src1 = and i32 %orig, -256
+  %or = or i32 %src2, %src1
+  ret i32 %or
+}