[llvm] 6c32bc4 - [VE] Change to expand BRCOND

[Kazushi Marukawa via llvm-commits]

Author: Kazushi (Jam) Marukawa
Date: 2020-10-12T19:18:37+09:00
New Revision: 6c32bc4875117696d23c035e9e11320e095e52a0

URL: https://github.com/llvm/llvm-project/commit/6c32bc4875117696d23c035e9e11320e095e52a0
DIFF: https://github.com/llvm/llvm-project/commit/6c32bc4875117696d23c035e9e11320e095e52a0.diff

LOG: [VE] Change to expand BRCOND

VE doesn't have BRCOND instruction, so need to expand it.  Also add
a regression test.

Reviewed By: simoll

Differential Revision: https://reviews.llvm.org/D89173

Added: 
    llvm/test/CodeGen/VE/brcond.ll

Modified: 
    llvm/lib/Target/VE/VEISelLowering.cpp

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/VE/VEISelLowering.cpp b/llvm/lib/Target/VE/VEISelLowering.cpp
index 79975f82f694..e0172a7b7a6d 100644
--- a/llvm/lib/Target/VE/VEISelLowering.cpp
+++ b/llvm/lib/Target/VE/VEISelLowering.cpp
@@ -679,6 +679,11 @@ VETargetLowering::VETargetLowering(const TargetMachine &TM,
   setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Custom);
   /// } Stack
 
+  /// Branch {
+  // VE doesn't have BRCOND
+  setOperationAction(ISD::BRCOND, MVT::Other, Expand);
+  /// } Branch
+
   /// Int Ops {
   for (MVT IntVT : {MVT::i32, MVT::i64}) {
     // VE has no REM or DIVREM operations.

diff  --git a/llvm/test/CodeGen/VE/brcond.ll b/llvm/test/CodeGen/VE/brcond.ll
new file mode 100644
index 000000000000..515b6878c3ed
--- /dev/null
+++ b/llvm/test/CodeGen/VE/brcond.ll
@@ -0,0 +1,43 @@
+; RUN: llc < %s -mtriple=ve | FileCheck %s
+
+; Function Attrs: nounwind
+define void @test_then(i1 zeroext %0) {
+; CHECK-LABEL: test_then:
+; CHECK:       .LBB{{[0-9]+}}_4:
+; CHECK-NEXT:    breq.w 0, %s0, .LBB{{[0-9]+}}_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    #APP
+; CHECK-NEXT:    nop
+; CHECK-NEXT:    #NO_APP
+; CHECK-NEXT:  .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s11, 0, %s9
+  br i1 %0, label %2, label %3
+
+2:                                                ; preds = %1
+  tail call void asm sideeffect "nop", ""()
+  br label %3
+
+3:                                                ; preds = %2, %1
+  ret void
+}
+
+; Function Attrs: nounwind
+define void @test_else(i1 zeroext %0) {
+; CHECK-LABEL: test_else:
+; CHECK:       .LBB{{[0-9]+}}_4:
+; CHECK-NEXT:    brne.w 0, %s0, .LBB{{[0-9]+}}_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    #APP
+; CHECK-NEXT:    nop
+; CHECK-NEXT:    #NO_APP
+; CHECK-NEXT:  .LBB{{[0-9]+}}_2:
+; CHECK-NEXT:    or %s11, 0, %s9
+  br i1 %0, label %3, label %2
+
+2:                                                ; preds = %1
+  tail call void asm sideeffect "nop", ""()
+  br label %3
+
+3:                                                ; preds = %2, %1
+  ret void
+}