diff options
| -rw-r--r-- | llvm/lib/Target/R600/SIISelLowering.cpp | 1 | ||||
| -rw-r--r-- | llvm/test/CodeGen/R600/fmax3.f64.ll | 24 |
2 files changed, 25 insertions, 0 deletions
diff --git a/llvm/lib/Target/R600/SIISelLowering.cpp b/llvm/lib/Target/R600/SIISelLowering.cpp index af38c94928a..16d67022aa8 100644 --- a/llvm/lib/Target/R600/SIISelLowering.cpp +++ b/llvm/lib/Target/R600/SIISelLowering.cpp @@ -1617,6 +1617,7 @@ SDValue SITargetLowering::PerformDAGCombine(SDNode *N, case AMDGPUISD::UMAX: case AMDGPUISD::UMIN: { if (DCI.getDAGCombineLevel() >= AfterLegalizeDAG && + N->getValueType(0) != MVT::f64 && getTargetMachine().getOptLevel() > CodeGenOpt::None) return performMin3Max3Combine(N, DCI); break; diff --git a/llvm/test/CodeGen/R600/fmax3.f64.ll b/llvm/test/CodeGen/R600/fmax3.f64.ll new file mode 100644 index 00000000000..f78c71b2826 --- /dev/null +++ b/llvm/test/CodeGen/R600/fmax3.f64.ll @@ -0,0 +1,24 @@ +; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s +; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s + +declare double @llvm.maxnum.f64(double, double) nounwind readnone + +; SI-LABEL: {{^}}test_fmax3_f64: +; SI-DAG: buffer_load_dwordx2 [[REGA:v\[[0-9]+:[0-9]+\]]], s[{{[0-9]+:[0-9]+}}], 0{{$}} +; SI-DAG: buffer_load_dwordx2 [[REGB:v\[[0-9]+:[0-9]+\]]], s[{{[0-9]+:[0-9]+}}], 0 offset:8 +; SI-DAG: buffer_load_dwordx2 [[REGC:v\[[0-9]+:[0-9]+\]]], s[{{[0-9]+:[0-9]+}}], 0 offset:16 +; SI: v_max_f64 [[REGA]], [[REGA]], [[REGB]] +; SI: v_max_f64 [[RESULT:v\[[0-9]+:[0-9]+\]]], [[REGA]], [[REGC]] +; SI: buffer_store_dwordx2 [[RESULT]], +; SI: s_endpgm +define void @test_fmax3_f64(double addrspace(1)* %out, double addrspace(1)* %aptr) nounwind { + %bptr = getelementptr double, double addrspace(1)* %aptr, i32 1 + %cptr = getelementptr double, double addrspace(1)* %aptr, i32 2 + %a = load double, double addrspace(1)* %aptr, align 8 + %b = load double, double addrspace(1)* %bptr, align 8 + %c = load double, double addrspace(1)* %cptr, align 8 + %f0 = call double @llvm.maxnum.f64(double %a, double %b) nounwind readnone + %f1 = call double @llvm.maxnum.f64(double %f0, double %c) nounwind readnone + store double %f1, double addrspace(1)* %out, align 8 + ret void +} |
