diff --git a/llvm/test/Transforms/PhaseOrdering/fast-basictest.ll b/llvm/test/Transforms/PhaseOrdering/fast-basictest.ll
index a5780ddc11605..c1480f4a3cc09 100644
--- a/llvm/test/Transforms/PhaseOrdering/fast-basictest.ll
+++ b/llvm/test/Transforms/PhaseOrdering/fast-basictest.ll
@@ -1,5 +1,9 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-;
+; RUN: opt < %s -reassociate -instcombine -S | FileCheck %s --check-prefixes=CHECK,REASSOC_AND_IC --allow-unused-prefixes
+; RUN: opt < %s -O2 -S | FileCheck %s --check-prefixes=CHECK,O2 --allow-unused-prefixes
+
+target triple = "x86_64--"
+
 ; Test cases in this file are intended to be run with both reassociate and
 ; instcombine passes enabled.
 ;
@@ -8,9 +12,6 @@
 ; - PhaseOrdering/fast-basictest.ll
 ; - PhaseOrdering/fast-reassociate-gvn.ll
 ; - Reassociate/fast-basictest.ll
-;
-; RUN: opt < %s -reassociate -instcombine -S | FileCheck %s --check-prefixes=CHECK,REASSOC_AND_IC --allow-unused-prefixes
-; RUN: opt < %s -O2 -S | FileCheck %s --check-prefixes=CHECK,O2 --allow-unused-prefixes
 
 ; test2 ... test18 - both reassociate and instcombine passes
 ; are required to perform a transform
@@ -280,10 +281,15 @@ define float @test19(float %a, float %b, float %c) nounwind  {
 }
 
 define float @test19_reassoc_nsz(float %a, float %b, float %c) nounwind  {
-; CHECK-LABEL: @test19_reassoc_nsz(
-; CHECK-NEXT:    [[TMP1:%.*]] = fadd reassoc nsz float [[C:%.*]], [[B:%.*]]
-; CHECK-NEXT:    [[T7:%.*]] = fneg reassoc nsz float [[TMP1]]
-; CHECK-NEXT:    ret float [[T7]]
+; REASSOC_AND_IC-LABEL: @test19_reassoc_nsz(
+; REASSOC_AND_IC-NEXT:    [[TMP1:%.*]] = fadd reassoc nsz float [[B:%.*]], [[C:%.*]]
+; REASSOC_AND_IC-NEXT:    [[T7:%.*]] = fneg reassoc nsz float [[TMP1]]
+; REASSOC_AND_IC-NEXT:    ret float [[T7]]
+;
+; O2-LABEL: @test19_reassoc_nsz(
+; O2-NEXT:    [[TMP1:%.*]] = fadd reassoc nsz float [[C:%.*]], [[B:%.*]]
+; O2-NEXT:    [[T7:%.*]] = fneg reassoc nsz float [[TMP1]]
+; O2-NEXT:    ret float [[T7]]
 ;
   %t3 = fsub reassoc nsz float %a, %b
   %t5 = fsub reassoc nsz float %t3, %c