1 files changed, 96 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/ctpop-01.ll b/test/CodeGen/SystemZ/ctpop-01.ll
new file mode 100644
index 0000000..ad80f9f
--- /dev/null
+++ b/test/CodeGen/SystemZ/ctpop-01.ll
@@ -0,0 +1,96 @@
+; Test population-count instruction
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
+
+declare i32 @llvm.ctpop.i32(i32 %a)
+declare i64 @llvm.ctpop.i64(i64 %a)
+
+define i32 @f1(i32 %a) {
+; CHECK-LABEL: f1:
+; CHECK: popcnt  %r0, %r2
+; CHECK: sllk    %r1, %r0, 16
+; CHECK: ar      %r1, %r0
+; CHECK: sllk    %r2, %r1, 8
+; CHECK: ar      %r2, %r1
+; CHECK: srl     %r2, 24
+; CHECK: br      %r14
+
+  %popcnt = call i32 @llvm.ctpop.i32(i32 %a)
+  ret i32 %popcnt
+}
+
+define i32 @f2(i32 %a) {
+; CHECK-LABEL: f2:
+; CHECK: llhr    %r0, %r2
+; CHECK: popcnt  %r0, %r0
+; CHECK: risblg  %r2, %r0, 16, 151, 8
+; CHECK: ar      %r2, %r0
+; CHECK: srl     %r2, 8
+; CHECK: br      %r14
+  %and = and i32 %a, 65535
+  %popcnt = call i32 @llvm.ctpop.i32(i32 %and)
+  ret i32 %popcnt
+}
+
+define i32 @f3(i32 %a) {
+; CHECK-LABEL: f3:
+; CHECK: llcr    %r0, %r2
+; CHECK: popcnt  %r2, %r0
+; CHECK: br      %r14
+  %and = and i32 %a, 255
+  %popcnt = call i32 @llvm.ctpop.i32(i32 %and)
+  ret i32 %popcnt
+}
+
+define i64 @f4(i64 %a) {
+; CHECK-LABEL: f4:
+; CHECK: popcnt  %r0, %r2
+; CHECK: sllg    %r1, %r0, 32
+; CHECK: agr     %r1, %r0
+; CHECK: sllg    %r0, %r1, 16
+; CHECK: agr     %r0, %r1
+; CHECK: sllg    %r1, %r0, 8
+; CHECK: agr     %r1, %r0
+; CHECK: srlg    %r2, %r1, 56
+; CHECK: br      %r14
+  %popcnt = call i64 @llvm.ctpop.i64(i64 %a)
+  ret i64 %popcnt
+}
+
+define i64 @f5(i64 %a) {
+; CHECK-LABEL: f5:
+; CHECK: llgfr   %r0, %r2
+; CHECK: popcnt  %r0, %r0
+; CHECK: sllg    %r1, %r0, 16
+; CHECK: algfr   %r0, %r1
+; CHECK: sllg    %r1, %r0, 8
+; CHECK: algfr   %r0, %r1
+; CHECK: srlg    %r2, %r0, 24
+  %and = and i64 %a, 4294967295
+  %popcnt = call i64 @llvm.ctpop.i64(i64 %and)
+  ret i64 %popcnt
+}
+
+define i64 @f6(i64 %a) {
+; CHECK-LABEL: f6:
+; CHECK: llghr   %r0, %r2
+; CHECK: popcnt  %r0, %r0
+; CHECK: risbg   %r1, %r0, 48, 183, 8
+; CHECK: agr     %r1, %r0
+; CHECK: srlg    %r2, %r1, 8
+; CHECK: br      %r14
+  %and = and i64 %a, 65535
+  %popcnt = call i64 @llvm.ctpop.i64(i64 %and)
+  ret i64 %popcnt
+}
+
+define i64 @f7(i64 %a) {
+; CHECK-LABEL: f7:
+; CHECK: llgcr   %r0, %r2
+; CHECK: popcnt  %r2, %r0
+; CHECK: br      %r14
+  %and = and i64 %a, 255
+  %popcnt = call i64 @llvm.ctpop.i64(i64 %and)
+  ret i64 %popcnt
+}
+