diff options
Diffstat (limited to 'llvm/test/CodeGen/RISCV/float-bitmanip-dagcombines.ll')
-rw-r--r-- | llvm/test/CodeGen/RISCV/float-bitmanip-dagcombines.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/RISCV/float-bitmanip-dagcombines.ll b/llvm/test/CodeGen/RISCV/float-bitmanip-dagcombines.ll index 01f3152c497..215fe5839ef 100644 --- a/llvm/test/CodeGen/RISCV/float-bitmanip-dagcombines.ll +++ b/llvm/test/CodeGen/RISCV/float-bitmanip-dagcombines.ll @@ -5,6 +5,8 @@ ; RUN: | FileCheck -check-prefix=RV32IF %s ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \ ; RUN: | FileCheck -check-prefix=RV64I %s +; RUN: llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs < %s \ +; RUN: | FileCheck -check-prefix=RV64IF %s ; This file tests cases where simple floating point operations can be ; profitably handled though bit manipulation if a soft-float ABI is being used @@ -30,6 +32,12 @@ define float @fneg(float %a) nounwind { ; RV64I-NEXT: lui a1, 524288 ; RV64I-NEXT: xor a0, a0, a1 ; RV64I-NEXT: ret +; +; RV64IF-LABEL: fneg: +; RV64IF: # %bb.0: +; RV64IF-NEXT: lui a1, 524288 +; RV64IF-NEXT: xor a0, a0, a1 +; RV64IF-NEXT: ret %1 = fneg float %a ret float %1 } @@ -57,6 +65,13 @@ define float @fabs(float %a) nounwind { ; RV64I-NEXT: addiw a1, a1, -1 ; RV64I-NEXT: and a0, a0, a1 ; RV64I-NEXT: ret +; +; RV64IF-LABEL: fabs: +; RV64IF: # %bb.0: +; RV64IF-NEXT: lui a1, 524288 +; RV64IF-NEXT: addiw a1, a1, -1 +; RV64IF-NEXT: and a0, a0, a1 +; RV64IF-NEXT: ret %1 = call float @llvm.fabs.f32(float %a) ret float %1 } @@ -97,6 +112,14 @@ define float @fcopysign_fneg(float %a, float %b) nounwind { ; RV64I-NEXT: and a0, a0, a2 ; RV64I-NEXT: or a0, a0, a1 ; RV64I-NEXT: ret +; +; RV64IF-LABEL: fcopysign_fneg: +; RV64IF: # %bb.0: +; RV64IF-NEXT: fmv.w.x ft0, a1 +; RV64IF-NEXT: fmv.w.x ft1, a0 +; RV64IF-NEXT: fsgnjn.s ft0, ft1, ft0 +; RV64IF-NEXT: fmv.x.w a0, ft0 +; RV64IF-NEXT: ret %1 = fneg float %b %2 = call float @llvm.copysign.f32(float %a, float %1) ret float %2 |