1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/R600/fmax3.f64.ll b/test/CodeGen/R600/fmax3.f64.ll
new file mode 100644
index 0000000..f78c71b
--- /dev/null
+++ b/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
+}