26 lines · c
1// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -disable-O0-optnone -emit-llvm \2// RUN: %s -o - | opt -S -passes=mem2reg | FileCheck %s3 4// CHECK-LABEL: define dso_local half @test_convert_from_bf16_to_fp16(5// CHECK-SAME: bfloat noundef [[A:%.*]]) #[[ATTR0:[0-9]+]] {6// CHECK-NEXT: entry:7// CHECK-NEXT: [[FPEXT:%.*]] = fpext bfloat [[A]] to float8// CHECK-NEXT: [[FPTRUNC:%.*]] = fptrunc float [[FPEXT]] to half9// CHECK-NEXT: ret half [[FPTRUNC]]10//11_Float16 test_convert_from_bf16_to_fp16(__bf16 a) {12 return (_Float16)a;13}14 15// CHECK-LABEL: define dso_local bfloat @test_convert_from_fp16_to_bf16(16// CHECK-SAME: half noundef [[A:%.*]]) #[[ATTR0]] {17// CHECK-NEXT: entry:18// CHECK-NEXT: [[FPEXT:%.*]] = fpext half [[A]] to float19// CHECK-NEXT: [[FPTRUNC:%.*]] = fptrunc float [[FPEXT]] to bfloat20// CHECK-NEXT: ret bfloat [[FPTRUNC]]21//22__bf16 test_convert_from_fp16_to_bf16(_Float16 a) {23 return (__bf16)a;24}25 26