diff --git a/test/CodeGen/X86/negative-sin.ll b/test/CodeGen/X86/negative-sin.ll
index 189c43c74b0..7842eb8456e 100644
--- a/test/CodeGen/X86/negative-sin.ll
+++ b/test/CodeGen/X86/negative-sin.ll
@@ -6,7 +6,7 @@ declare double @sin(double %f)
 define double @foo(double %e)
 {
   %f = fsub double 0.0, %e
-  %g = call double @sin(double %f)
+  %g = call double @sin(double %f) readonly
   %h = fsub double 0.0, %g
   ret double %h
 }
diff --git a/test/CodeGen/X86/sincos.ll b/test/CodeGen/X86/sincos.ll
index ec5fc398c26..13f932982f1 100644
--- a/test/CodeGen/X86/sincos.ll
+++ b/test/CodeGen/X86/sincos.ll
@@ -4,45 +4,45 @@
 ; RUN: llc < %s -march=x86 -mattr=-sse,-sse2,-sse3 -enable-unsafe-fp-math  | \
 ; RUN:   grep cos\$ | count 3
 
-declare float  @sinf(float)
+declare float  @sinf(float) readonly
 
-declare double @sin(double)
+declare double @sin(double) readonly
 
-declare x86_fp80 @sinl(x86_fp80)
+declare x86_fp80 @sinl(x86_fp80) readonly
 
 define float @test1(float %X) {
-        %Y = call float @sinf(float %X)
+        %Y = call float @sinf(float %X) readonly
         ret float %Y
 }
 
 define double @test2(double %X) {
-        %Y = call double @sin(double %X)
+        %Y = call double @sin(double %X) readonly
         ret double %Y
 }
 
 define x86_fp80 @test3(x86_fp80 %X) {
-        %Y = call x86_fp80 @sinl(x86_fp80 %X)
+        %Y = call x86_fp80 @sinl(x86_fp80 %X) readonly
         ret x86_fp80 %Y
 }
 
-declare float @cosf(float)
+declare float @cosf(float) readonly
 
-declare double @cos(double)
+declare double @cos(double) readonly
 
-declare x86_fp80 @cosl(x86_fp80)
+declare x86_fp80 @cosl(x86_fp80) readonly
 
 define float @test4(float %X) {
-        %Y = call float @cosf(float %X)
+        %Y = call float @cosf(float %X) readonly
         ret float %Y
 }
 
 define double @test5(double %X) {
-        %Y = call double @cos(double %X)
+        %Y = call double @cos(double %X) readonly
         ret double %Y
 }
 
 define x86_fp80 @test6(x86_fp80 %X) {
-        %Y = call x86_fp80 @cosl(x86_fp80 %X)
+        %Y = call x86_fp80 @cosl(x86_fp80 %X) readonly
         ret x86_fp80 %Y
 }