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[AArch64] Allow label arithmetic with add/sub/cmp Allow instructions such as 'cmp w0, #(end - start)' by folding the expression into a constant. For ELF, we fold only if the symbols are in the same section. For MachO, we fold if the expression contains only symbols that are not linker visible. Fixes https://llvm.org/bugs/show_bug.cgi?id=18920 Differential Revision: https://reviews.llvm.org/D23834 llvm-svn: 283862
2016-10-11 17:17:47 +08:00
// RUN: not llvm-mc -triple aarch64-darwin -filetype=obj %s -o /dev/null 2>&1 | FileCheck %s
// RUN: not llvm-mc -triple aarch64-ios -filetype=obj %s -o /dev/null 2>&1 | FileCheck %s
Lstart:
.space 8
Lend:
add w0, w1, #(Lend - external)
cmp w0, #(Lend - external)
// CHECK: error: unknown AArch64 fixup kind!
// CHECK-NEXT: add w0, w1, #(Lend - external)
// CHECK-NEXT: ^
// CHECK: error: unknown AArch64 fixup kind!
// CHECK-NEXT: cmp w0, #(Lend - external)
// CHECK-NEXT: ^
add w0, w1, #(Lend - var@TLVPPAGEOFF)
cmp w0, #(Lend - var@TLVPPAGEOFF)
Add a common error checking for some invalid expressions. This refactors a bit of duplicated code and fixes an assertion failure on ELF. llvm-svn: 306035
2017-06-23 01:25:35 +08:00
// CHECK: error: unsupported subtraction of qualified symbol
[AArch64] Allow label arithmetic with add/sub/cmp Allow instructions such as 'cmp w0, #(end - start)' by folding the expression into a constant. For ELF, we fold only if the symbols are in the same section. For MachO, we fold if the expression contains only symbols that are not linker visible. Fixes https://llvm.org/bugs/show_bug.cgi?id=18920 Differential Revision: https://reviews.llvm.org/D23834 llvm-svn: 283862
2016-10-11 17:17:47 +08:00
// CHECK-NEXT: add w0, w1, #(Lend - var@TLVPPAGEOFF)
// CHECK-NEXT: ^
Add a common error checking for some invalid expressions. This refactors a bit of duplicated code and fixes an assertion failure on ELF. llvm-svn: 306035
2017-06-23 01:25:35 +08:00
// CHECK: error: unsupported subtraction of qualified symbol
[AArch64] Allow label arithmetic with add/sub/cmp Allow instructions such as 'cmp w0, #(end - start)' by folding the expression into a constant. For ELF, we fold only if the symbols are in the same section. For MachO, we fold if the expression contains only symbols that are not linker visible. Fixes https://llvm.org/bugs/show_bug.cgi?id=18920 Differential Revision: https://reviews.llvm.org/D23834 llvm-svn: 283862
2016-10-11 17:17:47 +08:00
// CHECK-NEXT: cmp w0, #(Lend - var@TLVPPAGEOFF)
// CHECK-NEXT: ^
add w0, w1, #(Lstart - Lend)
cmp w0, #(Lstart - Lend)
// CHECK: error: fixup value out of range
// CHECK-NEXT: add w0, w1, #(Lstart - Lend)
// CHECK-NEXT: ^
// CHECK: error: fixup value out of range
// CHECK-NEXT: cmp w0, #(Lstart - Lend)
// CHECK-NEXT: ^
.space 5000
Lfar:
add w0, w1, #(Lfar - Lend)
cmp w0, #(Lfar - Lend)
// CHECK: error: fixup value out of range
// CHECK-NEXT: add w0, w1, #(Lfar - Lend)
// CHECK-NEXT: ^
// CHECK: error: fixup value out of range
// CHECK-NEXT: cmp w0, #(Lfar - Lend)
// CHECK-NEXT: ^
Lprivate1:
.space 8
notprivate:
.space 8
Lprivate2:
add w0, w1, #(Lprivate2 - Lprivate1)
cmp w0, #(Lprivate2 - Lprivate1)
// CHECK: error: unknown AArch64 fixup kind!
// CHECK-NEXT: add w0, w1, #(Lprivate2 - Lprivate1)
// CHECK-NEXT: ^
// CHECK: error: unknown AArch64 fixup kind!
// CHECK-NEXT: cmp w0, #(Lprivate2 - Lprivate1)
// CHECK-NEXT: ^
.section __TEXT, sec_y, regular, pure_instructions
Lend_across_sec:
add w0, w1, #(Lend_across_sec - Lprivate2)
cmp w0, #(Lend_across_sec - Lprivate2)
// CHECK: error: unknown AArch64 fixup kind!
// CHECK-NEXT: add w0, w1, #(Lend_across_sec - Lprivate2)
// CHECK-NEXT: ^
// CHECK: error: unknown AArch64 fixup kind!
// CHECK-NEXT: cmp w0, #(Lend_across_sec - Lprivate2)
// CHECK-NEXT: ^