From f27df33b02a85a030aaa4476aee7d1e8fe5921b2 Mon Sep 17 00:00:00 2001
From: Venkatraman Govindaraju <venkatra@cs.wisc.edu>
Date: Tue, 11 Jan 2011 22:38:28 +0000
Subject: [PATCH] SPARC backend: correct ICC/FCC uses for ADDX and SELECT_CC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123281 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Sparc/SparcInstrInfo.td  | 36 ++++++++------
 test/CodeGen/SPARC/2011-01-11-CC.ll | 76 +++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+), 16 deletions(-)
 create mode 100755 test/CodeGen/SPARC/2011-01-11-CC.ll

diff --git a/lib/Target/Sparc/SparcInstrInfo.td b/lib/Target/Sparc/SparcInstrInfo.td
index 4f3abc98758..4877af8c8fb 100644
--- a/lib/Target/Sparc/SparcInstrInfo.td
+++ b/lib/Target/Sparc/SparcInstrInfo.td
@@ -233,36 +233,39 @@ let Predicates = [HasNoV9] in {  // Only emit these in V8 mode.
 // SELECT_CC_* - Used to implement the SELECT_CC DAG operation.  Expanded after
 // instruction selection into a branch sequence.  This has to handle all
 // permutations of selection between i32/f32/f64 on ICC and FCC.
-let Uses = [ICC],
-    usesCustomInserter = 1 in {   // Expanded after instruction selection.
+  // Expanded after instruction selection.
+let Uses = [ICC], usesCustomInserter = 1 in { 
   def SELECT_CC_Int_ICC
    : Pseudo<(outs IntRegs:$dst), (ins IntRegs:$T, IntRegs:$F, i32imm:$Cond),
             "; SELECT_CC_Int_ICC PSEUDO!",
             [(set IntRegs:$dst, (SPselecticc IntRegs:$T, IntRegs:$F,
                                              imm:$Cond))]>;
-  def SELECT_CC_Int_FCC
-   : Pseudo<(outs IntRegs:$dst), (ins IntRegs:$T, IntRegs:$F, i32imm:$Cond),
-            "; SELECT_CC_Int_FCC PSEUDO!",
-            [(set IntRegs:$dst, (SPselectfcc IntRegs:$T, IntRegs:$F,
-                                             imm:$Cond))]>;
-}
-
-let usesCustomInserter = 1, Uses = [FCC] in {
   def SELECT_CC_FP_ICC
    : Pseudo<(outs FPRegs:$dst), (ins FPRegs:$T, FPRegs:$F, i32imm:$Cond),
             "; SELECT_CC_FP_ICC PSEUDO!",
             [(set FPRegs:$dst, (SPselecticc FPRegs:$T, FPRegs:$F,
                                             imm:$Cond))]>;
-  def SELECT_CC_FP_FCC
-   : Pseudo<(outs FPRegs:$dst), (ins FPRegs:$T, FPRegs:$F, i32imm:$Cond),
-            "; SELECT_CC_FP_FCC PSEUDO!",
-            [(set FPRegs:$dst, (SPselectfcc FPRegs:$T, FPRegs:$F,
-                                            imm:$Cond))]>;
+
   def SELECT_CC_DFP_ICC
    : Pseudo<(outs DFPRegs:$dst), (ins DFPRegs:$T, DFPRegs:$F, i32imm:$Cond),
             "; SELECT_CC_DFP_ICC PSEUDO!",
             [(set DFPRegs:$dst, (SPselecticc DFPRegs:$T, DFPRegs:$F,
                                              imm:$Cond))]>;
+}
+
+let usesCustomInserter = 1, Uses = [FCC] in {
+
+  def SELECT_CC_Int_FCC
+   : Pseudo<(outs IntRegs:$dst), (ins IntRegs:$T, IntRegs:$F, i32imm:$Cond),
+            "; SELECT_CC_Int_FCC PSEUDO!",
+            [(set IntRegs:$dst, (SPselectfcc IntRegs:$T, IntRegs:$F,
+                                             imm:$Cond))]>;
+
+  def SELECT_CC_FP_FCC
+   : Pseudo<(outs FPRegs:$dst), (ins FPRegs:$T, FPRegs:$F, i32imm:$Cond),
+            "; SELECT_CC_FP_FCC PSEUDO!",
+            [(set FPRegs:$dst, (SPselectfcc FPRegs:$T, FPRegs:$F,
+                                            imm:$Cond))]>;
   def SELECT_CC_DFP_FCC
    : Pseudo<(outs DFPRegs:$dst), (ins DFPRegs:$T, DFPRegs:$F, i32imm:$Cond),
             "; SELECT_CC_DFP_FCC PSEUDO!",
@@ -440,7 +443,8 @@ def LEA_ADDri   : F3_2<2, 0b000000,
 let Defs = [ICC] in                   
   defm ADDCC  : F3_12<"addcc", 0b010000, addc>;
 
-defm ADDX  : F3_12<"addx", 0b001000, adde>;
+let Uses = [ICC] in
+  defm ADDX  : F3_12<"addx", 0b001000, adde>;
 
 // Section B.15 - Subtract Instructions, p. 110
 defm SUB    : F3_12  <"sub"  , 0b000100, sub>;
diff --git a/test/CodeGen/SPARC/2011-01-11-CC.ll b/test/CodeGen/SPARC/2011-01-11-CC.ll
new file mode 100755
index 00000000000..c9f7dda3dbd
--- /dev/null
+++ b/test/CodeGen/SPARC/2011-01-11-CC.ll
@@ -0,0 +1,76 @@
+; RUN: llc -march=sparc <%s | FileCheck %s
+
+
+define i32 @test_addx(i64 %a, i64 %b, i64 %c) nounwind readnone noinline {
+entry:
+; CHECK: addcc
+; CHECK-NOT: subcc
+; CHECK: addx
+  %0 = add i64 %a, %b
+  %1 = icmp ugt i64 %0, %c
+  %2 = zext i1 %1 to i32
+  ret i32 %2
+}
+
+
+define i32 @test_select_int_icc(i32 %a, i32 %b, i32 %c) nounwind readnone noinline {
+entry:
+; CHECK: test_select_int_icc
+; CHECK: subcc
+; CHECK: be
+  %0 = icmp eq i32 %a, 0
+  %1 = select i1 %0, i32 %b, i32 %c
+  ret i32 %1
+}
+
+
+define float @test_select_fp_icc(i32 %a, float %f1, float %f2) nounwind readnone noinline {
+entry:
+; CHECK: test_select_fp_icc
+; CHECK: subcc
+; CHECK: be
+  %0 = icmp eq i32 %a, 0
+  %1 = select i1 %0, float %f1, float %f2
+  ret float %1
+}
+
+define double @test_select_dfp_icc(i32 %a, double %f1, double %f2) nounwind readnone noinline {
+entry:
+; CHECK: test_select_fp_icc
+; CHECK: subcc
+; CHECK: be
+  %0 = icmp eq i32 %a, 0
+  %1 = select i1 %0, double %f1, double %f2
+  ret double %1
+}
+
+define i32 @test_select_int_fcc(float %f, i32 %a, i32 %b) nounwind readnone noinline {
+entry:
+;CHECK: test_select_int_fcc
+;CHECK: fcmps
+;CHECK: fbne
+  %0 = fcmp une float %f, 0.000000e+00
+  %a.b = select i1 %0, i32 %a, i32 %b
+  ret i32 %a.b
+}
+
+
+define float @test_select_fp_fcc(float %f, float %f1, float %f2) nounwind readnone noinline {
+entry:
+;CHECK: test_select_fp_fcc
+;CHECK: fcmps
+;CHECK: fbne
+  %0 = fcmp une float %f, 0.000000e+00
+  %1 = select i1 %0, float %f1, float %f2
+  ret float %1
+}
+
+define double @test_select_dfp_fcc(double %f, double %f1, double %f2) nounwind readnone noinline {
+entry:
+;CHECK: test_select_dfp_fcc
+;CHECK: fcmpd
+;CHECK: fbne
+  %0 = fcmp une double %f, 0.000000e+00
+  %1 = select i1 %0, double %f1, double %f2
+  ret double %1
+}