[X86] Introduction of FeatureX87.

Add FeatureX87 in X86 backend to be able to define CPUs which doesn't have x87.

Differential Revision: http://reviews.llvm.org/D13979

llvm-svn: 264148

1 files changed, 55 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/x87.ll b/llvm/test/CodeGen/X86/x87.ll
new file mode 100644
index 00000000000..683d7b05cf8
--- /dev/null
+++ b/llvm/test/CodeGen/X86/x87.ll
@@ -0,0 +1,55 @@
+; RUN: llc < %s -march=x86 | FileCheck %s -check-prefix=X87
+; RUN: llc < %s -march=x86-64 -mattr=-sse | FileCheck %s -check-prefix=X87
+; RUN: llc < %s -march=x86 -mattr=-x87 | FileCheck %s -check-prefix=NOX87 --implicit-check-not "{{ }}f{{.*}}"
+; RUN: llc < %s -march=x86-64 -mattr=-x87,-sse | FileCheck %s -check-prefix=NOX87 --implicit-check-not "{{ }}f{{.*}}"
+; RUN: llc < %s -march=x86 -mattr=-x87,+sse | FileCheck %s -check-prefix=NOX87 --implicit-check-not "{{ }}f{{.*}}"
+; RUN: llc < %s -march=x86-64 -mattr=-x87,-sse2 | FileCheck %s -check-prefix=NOX87 --implicit-check-not "{{ }}f{{.*}}"
+
+define void @test(i32 %i, i64 %l, float* %pf, double* %pd, fp128* %pld) nounwind readnone {
+; X87-LABEL: test:
+; NOX87-LABEL: test:
+; X87: fild
+; NOX87: __floatunsisf
+  %tmp = uitofp i32 %i to float
+
+; X87: fild
+; NOX87: __floatdisf
+  %tmp1 = sitofp i64 %l to float
+
+; X87: fadd
+; NOX87: __addsf3
+  %tmp2 = fadd float %tmp, %tmp1
+
+; X87: fstp
+  store float %tmp2, float* %pf
+
+; X87: fild
+; NOX87: __floatunsidf
+  %tmp3 = uitofp i32 %i to double
+
+; X87: fild
+; NOX87: __floatdidf
+  %tmp4 = sitofp i64 %l to double
+
+; X87: fadd
+; NOX87: __adddf3
+  %tmp5 = fadd double %tmp3, %tmp4
+
+; X87: fstp
+  store double %tmp5, double* %pd
+
+; X87: __floatsitf
+; NOX87: __floatsitf
+  %tmp6 = sitofp i32 %i to fp128
+
+; X87: __floatunditf
+; NOX87: __floatunditf
+  %tmp7 = uitofp i64 %l to fp128
+
+; X87: __addtf3
+; NOX87: __addtf3
+  %tmp8 = fadd fp128 %tmp6, %tmp7
+  store fp128 %tmp8, fp128* %pld
+
+  ret void
+}