Implement computeKnownBits for min/max nodes

[oota-llvm.git] / test / CodeGen / R600 / max.ll

diff --git a/test/CodeGen/R600/max.ll b/test/CodeGen/R600/max.ll
index 1aa9e68830117a9c217b0fe3c4c6f2fc10bd84dc..fef3e2f0a21ca7917970a9304295078db4666339 100644 (file)
--- a/test/CodeGen/R600/max.ll
+++ b/test/CodeGen/R600/max.ll
@@ -115,3 +115,54 @@ define void @s_test_umax_ugt_i32(i32 addrspace(1)* %out, i32 %a, i32 %b) nounwin
   store i32 %val, i32 addrspace(1)* %out, align 4
   ret void
 }
+
+; Make sure redundant and removed
+; FUNC-LABEL: {{^}}simplify_demanded_bits_test_umax_ugt_i16:
+; SI-DAG: s_load_dword [[A:s[0-9]+]], {{s\[[0-9]+:[0-9]+\]}}, 0xb
+; SI-DAG: s_load_dword [[B:s[0-9]+]], {{s\[[0-9]+:[0-9]+\]}}, 0xc
+; SI: s_max_u32 [[MIN:s[0-9]+]], [[A]], [[B]]
+; SI-NEXT: v_mov_b32_e32 [[VMIN:v[0-9]+]], [[MIN]]
+; SI-NEXT: buffer_store_dword [[VMIN]]
+define void @simplify_demanded_bits_test_umax_ugt_i16(i32 addrspace(1)* %out, i16 zeroext %a, i16 zeroext %b) nounwind {
+  %a.ext = zext i16 %a to i32
+  %b.ext = zext i16 %b to i32
+  %cmp = icmp ugt i32 %a.ext, %b.ext
+  %val = select i1 %cmp, i32 %a.ext, i32 %b.ext
+  %mask = and i32 %val, 65535
+  store i32 %mask, i32 addrspace(1)* %out
+  ret void
+}
+
+; Make sure redundant sign_extend_inreg removed.
+
+; FUNC-LABEL: {{^}}simplify_demanded_bits_test_min_slt_i16:
+; SI-DAG: s_load_dword [[A:s[0-9]+]], {{s\[[0-9]+:[0-9]+\]}}, 0xb
+; SI-DAG: s_load_dword [[B:s[0-9]+]], {{s\[[0-9]+:[0-9]+\]}}, 0xc
+; SI: s_max_i32 [[MIN:s[0-9]+]], [[A]], [[B]]
+; SI-NEXT: v_mov_b32_e32 [[VMIN:v[0-9]+]], [[MIN]]
+; SI-NEXT: buffer_store_dword [[VMIN]]
+define void @simplify_demanded_bits_test_min_slt_i16(i32 addrspace(1)* %out, i16 signext %a, i16 signext %b) nounwind {
+  %a.ext = sext i16 %a to i32
+  %b.ext = sext i16 %b to i32
+  %cmp = icmp sgt i32 %a.ext, %b.ext
+  %val = select i1 %cmp, i32 %a.ext, i32 %b.ext
+  %shl = shl i32 %val, 16
+  %sextinreg = ashr i32 %shl, 16
+  store i32 %sextinreg, i32 addrspace(1)* %out
+  ret void
+}
+
+; FIXME: Should get match min/max through extends inserted by
+; legalization.
+
+; FUNC-LABEL: {{^}}s_test_imin_sge_i16:
+; SI: s_sext_i32_i16
+; SI: s_sext_i32_i16
+; SI: v_cmp_ge_i32_e32
+; SI: v_cndmask_b32
+define void @s_test_imin_sge_i16(i16 addrspace(1)* %out, i16 %a, i16 %b) nounwind {
+  %cmp = icmp sge i16 %a, %b
+  %val = select i1 %cmp, i16 %a, i16 %b
+  store i16 %val, i16 addrspace(1)* %out
+  ret void
+}