fix infinite loop in instcombine with more than 4GB memcpy

[oota-llvm.git] / test / Transforms / GVN / 2011-07-07-MatchIntrinsicExtract.ll

diff --git a/test/Transforms/GVN/2011-07-07-MatchIntrinsicExtract.ll b/test/Transforms/GVN/2011-07-07-MatchIntrinsicExtract.ll
index a2ef4ab41858f57fbdcc4d2d710b21a688cf7caa..18178e45a22b36fb5d68b979c3c8d332cf7cbcee 100644 (file)
--- a/test/Transforms/GVN/2011-07-07-MatchIntrinsicExtract.ll
+++ b/test/Transforms/GVN/2011-07-07-MatchIntrinsicExtract.ll
@@ -39,9 +39,47 @@ entry:
 ; CHECK-NOT: mul1
 ; CHECK: ret
 
+define i64 @test4(i64 %a, i64 %b) nounwind ssp {
+entry:
+  %sadd = tail call %0 @llvm.sadd.with.overflow.i64(i64 %a, i64 %b)
+  %sadd.0 = extractvalue %0 %sadd, 0
+  %add1 = add i64 %a, %b
+  ret i64 %add1
+}
+
+; CHECK: @test4
+; CHECK-NOT: add1
+; CHECK: ret
+
+define i64 @test5(i64 %a, i64 %b) nounwind ssp {
+entry:
+  %ssub = tail call %0 @llvm.ssub.with.overflow.i64(i64 %a, i64 %b)
+  %ssub.0 = extractvalue %0 %ssub, 0
+  %sub1 = sub i64 %a, %b
+  ret i64 %sub1
+}
+
+; CHECK: @test5
+; CHECK-NOT: sub1
+; CHECK: ret
+
+define i64 @test6(i64 %a, i64 %b) nounwind ssp {
+entry:
+  %smul = tail call %0 @llvm.smul.with.overflow.i64(i64 %a, i64 %b)
+  %smul.0 = extractvalue %0 %smul, 0
+  %mul1 = mul i64 %a, %b
+  ret i64 %mul1
+}
+
+; CHECK: @test6
+; CHECK-NOT: mul1
+; CHECK: ret
 
 declare void @exit(i32) noreturn
 declare %0 @llvm.uadd.with.overflow.i64(i64, i64) nounwind readnone
 declare %0 @llvm.usub.with.overflow.i64(i64, i64) nounwind readnone
 declare %0 @llvm.umul.with.overflow.i64(i64, i64) nounwind readnone
+declare %0 @llvm.sadd.with.overflow.i64(i64, i64) nounwind readnone
+declare %0 @llvm.ssub.with.overflow.i64(i64, i64) nounwind readnone
+declare %0 @llvm.smul.with.overflow.i64(i64, i64) nounwind readnone