diff options
| -rw-r--r-- | polly/test/Isl/CodeGen/entry_with_trivial_phi.ll | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/polly/test/Isl/CodeGen/entry_with_trivial_phi.ll b/polly/test/Isl/CodeGen/entry_with_trivial_phi.ll new file mode 100644 index 00000000000..9cf06c8c36a --- /dev/null +++ b/polly/test/Isl/CodeGen/entry_with_trivial_phi.ll @@ -0,0 +1,37 @@ +; RUN: opt %loadPolly -polly-detect-unprofitable -polly-no-early-exit -polly-codegen -S < %s +; +; The entry of this scop's simple region (entry.split => for.end) has an trivial +; PHI node. LCSSA may create such PHI nodes. This is a breakdown of this case in +; the function 'Laguerre_With_Deflation' of oggenc from LLVM's test-suite. +; +; XFAIL: * +; +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" + +define void @test(i64 %n, float* noalias nonnull %A, float %a) { +entry: + br label %entry.split + +entry.split: + %b = phi float [ %a, %entry ] + store float %b, float* %A, align 4 + %cmp2 = icmp slt i64 %n, 5 + br i1 %cmp2, label %for.cond, label %for.end + +for.cond: ; preds = %for.inc, %entry + %i.0 = phi i64 [ 0, %entry.split ], [ %add, %for.inc ] + %cmp = icmp slt i64 %i.0, %n + br i1 %cmp, label %for.body, label %for.end + +for.body: ; preds = %for.cond + %arrayidx = getelementptr inbounds float, float* %A, i64 %i.0 + store float %a, float* %arrayidx, align 4 + br label %for.inc + +for.inc: ; preds = %for.body + %add = add nuw nsw i64 %i.0, 1 + br label %for.cond + +for.end: ; preds = %for.cond + ret void +} |
