[InstCombine] Added tests for PR41337

llvm-svn: 357522

diff --git a/llvm/test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll b/llvm/test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll
new file mode 100644 (file)
index 0000000..5005b3d
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll
@@ -0,0 +1,53 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -instcombine -S < %s | FileCheck %s
+
+define i32 @ctpop_bitreverse(i32 %x) {
+; CHECK-LABEL: @ctpop_bitreverse(
+; CHECK-NEXT:    [[A:%.*]] = tail call i32 @llvm.bitreverse.i32(i32 [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[A]]), !range !0
+; CHECK-NEXT:    ret i32 [[B]]
+;
+  %a = tail call i32 @llvm.bitreverse.i32(i32 %x)
+  %b = tail call i32 @llvm.ctpop.i32(i32 %a)
+  ret i32 %b
+}
+
+define <2 x i64> @ctpop_bitreverse_vec(<2 x i64> %x) {
+; CHECK-LABEL: @ctpop_bitreverse_vec(
+; CHECK-NEXT:    [[A:%.*]] = tail call <2 x i64> @llvm.bitreverse.v2i64(<2 x i64> [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> [[A]])
+; CHECK-NEXT:    ret <2 x i64> [[B]]
+;
+  %a = tail call <2 x i64> @llvm.bitreverse.v2i64(<2 x i64> %x)
+  %b = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> %a)
+  ret <2 x i64> %b
+}
+
+define i32 @ctpop_bswap(i32 %x) {
+; CHECK-LABEL: @ctpop_bswap(
+; CHECK-NEXT:    [[A:%.*]] = tail call i32 @llvm.bswap.i32(i32 [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[A]]), !range !0
+; CHECK-NEXT:    ret i32 [[B]]
+;
+  %a = tail call i32 @llvm.bswap.i32(i32 %x)
+  %b = tail call i32 @llvm.ctpop.i32(i32 %a)
+  ret i32 %b
+}
+
+define <2 x i64> @ctpop_bswap_vec(<2 x i64> %x) {
+; CHECK-LABEL: @ctpop_bswap_vec(
+; CHECK-NEXT:    [[A:%.*]] = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> [[X:%.*]])
+; CHECK-NEXT:    [[B:%.*]] = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> [[A]])
+; CHECK-NEXT:    ret <2 x i64> [[B]]
+;
+  %a = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> %x)
+  %b = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> %a)
+  ret <2 x i64> %b
+}
+
+declare i32 @llvm.bitreverse.i32(i32)
+declare <2 x i64> @llvm.bitreverse.v2i64(<2 x i64>)
+declare i32 @llvm.bswap.i32(i32)
+declare <2 x i64> @llvm.bswap.v2i64(<2 x i64>)
+declare i32 @llvm.ctpop.i32(i32)
+declare <2 x i64> @llvm.ctpop.v2i64(<2 x i64>)