[llvm] r213375 - AArch64: support f16 extend/trunc operations.

[Tim Northover]

Author: tnorthover
Date: Fri Jul 18 08:01:31 2014
New Revision: 213375

URL: http://llvm.org/viewvc/llvm-project?rev=213375&view=rev
Log:
AArch64: support f16 extend/trunc operations.

Modified:
    llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
    llvm/trunk/test/CodeGen/AArch64/half.ll

Modified: llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp?rev=213375&r1=213374&r2=213375&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp Fri Jul 18 08:01:31 2014
@@ -305,6 +305,7 @@ AArch64TargetLowering::AArch64TargetLowe
 
   // AArch64 does not have floating-point extending loads, i1 sign-extending
   // load, floating-point truncating stores, or v2i32->v2i16 truncating store.
+  setLoadExtAction(ISD::EXTLOAD, MVT::f16, Expand);
   setLoadExtAction(ISD::EXTLOAD, MVT::f32, Expand);
   setLoadExtAction(ISD::EXTLOAD, MVT::f64, Expand);
   setLoadExtAction(ISD::EXTLOAD, MVT::f80, Expand);

Modified: llvm/trunk/test/CodeGen/AArch64/half.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/half.ll?rev=213375&r1=213374&r2=213375&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/half.ll (original)
+++ llvm/trunk/test/CodeGen/AArch64/half.ll Fri Jul 18 08:01:31 2014
@@ -24,3 +24,39 @@ define void @test_bitcast_to_half(half*
   store half %val_fp, half* %addr
   ret void
 }
+
+define float @test_extend32(half* %addr) {
+; CHECK-LABEL: test_extend32:
+; CHECK: fcvt {{s[0-9]+}}, {{h[0-9]+}}
+
+  %val16 = load half* %addr
+  %val32 = fpext half %val16 to float
+  ret float %val32
+}
+
+define double @test_extend64(half* %addr) {
+; CHECK-LABEL: test_extend64:
+; CHECK: fcvt {{d[0-9]+}}, {{h[0-9]+}}
+
+  %val16 = load half* %addr
+  %val32 = fpext half %val16 to double
+  ret double %val32
+}
+
+define void @test_trunc32(float %in, half* %addr) {
+; CHECK-LABEL: test_trunc32:
+; CHECK: fcvt {{h[0-9]+}}, {{s[0-9]+}}
+
+  %val16 = fptrunc float %in to half
+  store half %val16, half* %addr
+  ret void
+}
+
+define void @test_trunc64(double %in, half* %addr) {
+; CHECK-LABEL: test_trunc64:
+; CHECK: fcvt {{h[0-9]+}}, {{d[0-9]+}}
+
+  %val16 = fptrunc double %in to half
+  store half %val16, half* %addr
+  ret void
+}