diff -Nurp a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
--- a/gcc/config/arm/arm.md	2019-08-10 00:21:12.658523444 +0800
+++ b/gcc/config/arm/arm.md	2019-08-10 00:21:53.478521496 +0800
@@ -5337,7 +5337,9 @@
    #
    ldrh%?\\t%0, %1"
   [(set_attr "type" "alu_shift_reg,load_byte")
-   (set_attr "predicable" "yes")]
+   (set_attr "predicable" "yes")
+   (set_attr "pool_range" "*,256")
+   (set_attr "neg_pool_range" "*,244")]
 )
 
 (define_insn "*arm_zero_extendhisi2_v6"
@@ -5348,7 +5350,9 @@
    uxth%?\\t%0, %1
    ldrh%?\\t%0, %1"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "extend,load_byte")]
+   (set_attr "type" "extend,load_byte")
+   (set_attr "pool_range" "*,256")
+   (set_attr "neg_pool_range" "*,244")]
 )
 
 (define_insn "*arm_zero_extendhisi2addsi"