[LLD][ELF] Add test cases to improve code coverage of Thunks [NFC]
Add two test cases to improve the code coverage of ThunkSection creation
when there are no existing ThunkSections in range. There are two test
cases, one where a new section can be created and another to trigger the
"InputSection too large for range extension thunk" error message. A recent
code coverage report showed that this section of code wasn't covered by a
test case.
Differential Revision: https://reviews.llvm.org/D46261
llvm-svn: 331751
diff --git a/lld/test/ELF/arm-thunk-nosuitable.s b/lld/test/ELF/arm-thunk-nosuitable.s
new file mode 100644
index 0000000..1fac4a5
--- /dev/null
+++ b/lld/test/ELF/arm-thunk-nosuitable.s
@@ -0,0 +1,33 @@
+// RUN: llvm-mc %s --arm-add-build-attributes --triple=armv7a-linux-gnueabihf --filetype=obj -o %t.o
+// RUN: ld.lld %t.o -o %t
+// RUN: llvm-objdump -triple=thumbv7a-linux-gnueabihf -d -start-address=2166784 -stop-address=2166794 %t | FileCheck %s
+// REQUIRES: ARM
+
+ // Create a conditional branch too far away from a precreated thunk
+ // section. This will need a thunk section created within range.
+ .syntax unified
+ .thumb
+
+ .section .text.0, "ax", %progbits
+ .space 2 * 1024 * 1024
+ .globl _start
+ .type _start, %function
+_start:
+ // Range of +/- 1 Megabyte, new ThunkSection will need creating after
+ // .text.1
+ beq.w target
+ .section .text.1, "ax", %progbits
+ bx lr
+
+// CHECK: _start:
+// CHECK-NEXT: 211000: 00 f0 00 80 beq.w #0
+// CHECK: __Thumbv7ABSLongThunk_target:
+// CHECK-NEXT: 211004: 00 f0 01 90 b.w #12582914
+// CHECK: $t.1:
+// CHECK-NEXT: 211008: 70 47 bx lr
+
+ .section .text.2, "ax", %progbits
+ .space 12 * 1024 * 1024
+ .globl target
+ .type target, %function
+target: bx lr
