================
@@ -0,0 +1,25 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -disable-O0-optnone
-emit-llvm \
+// RUN: %s -o - | opt -S -passes=mem2reg | FileCheck %s
+
+// CHECK-LABEL: define dso_local half @test_convert_from_bf16_to_fp16(
+// CHECK-SAME: bfloat noundef [[A:%.*]]) #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[FPEXT:%.*]] = fpext bfloat [[A]] to float
+// CHECK-NEXT: [[FPTRUNC:%.*]] = fptrunc float [[FPEXT]] to half
+// CHECK-NEXT: ret half [[FPTRUNC]]
+//
+_Float16 test_convert_from_bf16_to_fp16(__bf16 a) {
+ return (_Float16)a;
+}
+
+// CHECK-LABEL: define dso_local bfloat @test_convert_from_fp16_to_bf16(
+// CHECK-SAME: half noundef [[A:%.*]]) #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[FPEXT:%.*]] = fpext half [[A]] to float
+// CHECK-NEXT: [[FPTRUNC:%.*]] = fptrunc float [[FPEXT]] to bfloat
+// CHECK-NEXT: ret bfloat [[FPTRUNC]]
+//
+__bf16 test_convert_from_fp16_to_bf16(_Float16 a) {
+ return (__bf16)a;
+}
+
----------------
arsenm wrote:
The regular C case should still test the vector conversions. Also the rebase is
confusing me
https://github.com/llvm/llvm-project/pull/89051
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