[x86] Rip out some broken test cases for avx512 i1 store support.

[oota-llvm.git] / test / Transforms / PhaseOrdering / basic.ll

diff --git a/test/Transforms/PhaseOrdering/basic.ll b/test/Transforms/PhaseOrdering/basic.ll
index 2d52ae50df4721ec609a5cc35c7755c67c8ca653..2deefa61810991b79a308b1234defd19e62e078e 100644 (file)
--- a/test/Transforms/PhaseOrdering/basic.ll
+++ b/test/Transforms/PhaseOrdering/basic.ll
@@ -1,4 +1,4 @@
-; RUN: opt -O3 -S %s | FileCheck %s
+; RUN: opt -O3 -S < %s | FileCheck %s
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 target triple = "x86_64-apple-macosx10.6.7"
@@ -19,6 +19,33 @@ define void @test1() nounwind ssp {
   call void @free(i8* %tmp1)
   ret void
 
-; CHECK: @test1
+; CHECK-LABEL: @test1(
 ; CHECK-NEXT: ret void
 }
+
+; This function exposes a phase ordering problem when InstCombine is
+; turning %add into a bitmask, making it difficult to spot a 0 return value.
+;
+; It it also important that %add is expressed as a multiple of %div so scalar
+; evolution can recognize it.
+define i32 @test2(i32 %a, i32* %p) nounwind uwtable ssp {
+entry:
+  %div = udiv i32 %a, 4
+  %arrayidx = getelementptr inbounds i32* %p, i64 0
+  store i32 %div, i32* %arrayidx, align 4
+  %add = add i32 %div, %div
+  %arrayidx1 = getelementptr inbounds i32* %p, i64 1
+  store i32 %add, i32* %arrayidx1, align 4
+  %arrayidx2 = getelementptr inbounds i32* %p, i64 1
+  %0 = load i32* %arrayidx2, align 4
+  %arrayidx3 = getelementptr inbounds i32* %p, i64 0
+  %1 = load i32* %arrayidx3, align 4
+  %mul = mul i32 2, %1
+  %sub = sub i32 %0, %mul
+  ret i32 %sub
+
+; CHECK-LABEL: @test2(
+; CHECK: %div = lshr i32 %a, 2
+; CHECK: %add = shl nuw nsw i32 %div, 1
+; CHECK: ret i32 0
+}