Add fused multiple+add instructions from VFPv4.

Patch by Ana Pazos!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148658 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 68 insertions, 0 deletions

diff --git a/test/CodeGen/ARM/fusedMAC.ll b/test/CodeGen/ARM/fusedMAC.ll
new file mode 100644
index 0000000000..d7b8ed165b
--- /dev/null
+++ b/test/CodeGen/ARM/fusedMAC.ll
@@ -0,0 +1,68 @@
+; RUN: llc < %s -march=arm -mattr=+neon-vfpv4 | FileCheck %s
+; Check generated fused MAC and MLS.
+
+define double @fusedMACTest1(double %d1, double %d2, double %d3) nounwind readnone noinline {
+;CHECK: fusedMACTest1:
+;CHECK: vfma.f64
+  %1 = fmul double %d1, %d2
+  %2 = fadd double %1, %d3
+  ret double %2
+}
+
+define float @fusedMACTest2(float %f1, float %f2, float %f3) nounwind readnone noinline {
+;CHECK: fusedMACTest2:
+;CHECK: vfma.f32
+  %1 = fmul float %f1, %f2
+  %2 = fadd float %1, %f3
+  ret float %2
+}
+
+define double @fusedMACTest3(double %d1, double %d2, double %d3) nounwind readnone noinline {
+;CHECK: fusedMACTest3:
+;CHECK: vfms.f64
+  %1 = fmul double %d2, %d3
+  %2 = fsub double %d1, %1
+  ret double %2
+}
+
+define float @fusedMACTest4(float %f1, float %f2, float %f3) nounwind readnone noinline {
+;CHECK: fusedMACTest4:
+;CHECK: vfms.f32
+  %1 = fmul float %f2, %f3
+  %2 = fsub float %f1, %1
+  ret float %2
+}
+
+define double @fusedMACTest5(double %d1, double %d2, double %d3) nounwind readnone noinline {
+;CHECK: fusedMACTest5:
+;CHECK: vfnma.f64
+  %1 = fmul double %d1, %d2
+  %2 = fsub double -0.0, %1
+  %3 = fsub double %2, %d3
+  ret double %3
+}
+
+define float @fusedMACTest6(float %f1, float %f2, float %f3) nounwind {
+;CHECK: fusedMACTest6:
+;CHECK: vfnma.f32
+  %1 = fmul float %f1, %f2
+  %2 = fsub float -0.0, %1
+  %3 = fsub float %2, %f3
+  ret float %3
+}
+
+define double @fusedMACTest7(double %d1, double %d2, double %d3) nounwind {
+;CHECK: fusedMACTest7:
+;CHECK: vfnms.f64
+  %1 = fmul double %d1, %d2
+  %2 = fsub double %1, %d3
+  ret double %2
+}
+
+define float @fusedMACTest8(float %f1, float %f2, float %f3) nounwind {
+;CHECK: fusedMACTest8:
+;CHECK: vfnms.f32
+  %1 = fmul float %f1, %f2
+  %2 = fsub float %1, %f3
+  ret float %2
+}