1 files changed, 70 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/new-remat.ll b/llvm/test/CodeGen/X86/new-remat.ll
new file mode 100644
index 00000000000..726ad2d0a12
--- /dev/null
+++ b/llvm/test/CodeGen/X86/new-remat.ll
@@ -0,0 +1,70 @@
+; RUN: llc -verify-regalloc < %s | FileCheck %s
+; Check all spills are rematerialized.
+; CHECK-NOT: Spill
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+@b = common global double 0.000000e+00, align 8
+@a = common global i32 0, align 4
+
+; Function Attrs: nounwind uwtable
+define i32 @uniform_testdata(i32 %p1) {
+entry:
+  %cmp3 = icmp sgt i32 %p1, 0
+  br i1 %cmp3, label %for.body.preheader, label %for.end
+
+for.body.preheader:                               ; preds = %entry
+  %tmp = add i32 %p1, -1
+  %xtraiter = and i32 %p1, 7
+  %lcmp.mod = icmp eq i32 %xtraiter, 0
+  br i1 %lcmp.mod, label %for.body.preheader.split, label %for.body.prol.preheader
+
+for.body.prol.preheader:                          ; preds = %for.body.preheader
+  br label %for.body.prol
+
+for.body.prol:                                    ; preds = %for.body.prol, %for.body.prol.preheader
+  %i.04.prol = phi i32 [ %inc.prol, %for.body.prol ], [ 0, %for.body.prol.preheader ]
+  %prol.iter = phi i32 [ %prol.iter.sub, %for.body.prol ], [ %xtraiter, %for.body.prol.preheader ]
+  %tmp1 = load double, double* @b, align 8
+  %call.prol = tail call double @pow(double %tmp1, double 2.500000e-01)
+  %inc.prol = add nuw nsw i32 %i.04.prol, 1
+  %prol.iter.sub = add i32 %prol.iter, -1
+  %prol.iter.cmp = icmp eq i32 %prol.iter.sub, 0
+  br i1 %prol.iter.cmp, label %for.body.preheader.split.loopexit, label %for.body.prol
+
+for.body.preheader.split.loopexit:                ; preds = %for.body.prol
+  %inc.prol.lcssa = phi i32 [ %inc.prol, %for.body.prol ]
+  br label %for.body.preheader.split
+
+for.body.preheader.split:                         ; preds = %for.body.preheader.split.loopexit, %for.body.preheader
+  %i.04.unr = phi i32 [ 0, %for.body.preheader ], [ %inc.prol.lcssa, %for.body.preheader.split.loopexit ]
+  %tmp2 = icmp ult i32 %tmp, 7
+  br i1 %tmp2, label %for.end.loopexit, label %for.body.preheader.split.split
+
+for.body.preheader.split.split:                   ; preds = %for.body.preheader.split
+  br label %for.body
+
+for.body:                                         ; preds = %for.body, %for.body.preheader.split.split
+  %i.04 = phi i32 [ %i.04.unr, %for.body.preheader.split.split ], [ %inc.7, %for.body ]
+  %tmp3 = load double, double* @b, align 8
+  %call = tail call double @pow(double %tmp3, double 2.500000e-01)
+  %tmp4 = load double, double* @b, align 8
+  %call.1 = tail call double @pow(double %tmp4, double 2.500000e-01)
+  %inc.7 = add nsw i32 %i.04, 8
+  %exitcond.7 = icmp eq i32 %inc.7, %p1
+  br i1 %exitcond.7, label %for.end.loopexit.unr-lcssa, label %for.body
+
+for.end.loopexit.unr-lcssa:                       ; preds = %for.body
+  br label %for.end.loopexit
+
+for.end.loopexit:                                 ; preds = %for.end.loopexit.unr-lcssa, %for.body.preheader.split
+  br label %for.end
+
+for.end:                                          ; preds = %for.end.loopexit, %entry
+  %tmp5 = load i32, i32* @a, align 4
+  ret i32 %tmp5
+}
+
+; Function Attrs: nounwind
+declare double @pow(double, double)