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| author | Mihai Popa <mihail.popa@gmail.com> | 2013-06-11 09:48:35 +0000 |
|---|---|---|
| committer | Mihai Popa <mihail.popa@gmail.com> | 2013-06-11 09:48:35 +0000 |
| commit | 55ab7315d04ce4f25a15e5cd50f6a23d950a00cf (patch) | |
| tree | 8aa576a45ed168ba3f7dd4c76d15df65ef29aa86 | |
| parent | 16ad92ad3cd0cbbaa4d0524d9f201dd5dbefa15a (diff) | |
| download | llvm-55ab7315d04ce4f25a15e5cd50f6a23d950a00cf.tar.gz llvm-55ab7315d04ce4f25a15e5cd50f6a23d950a00cf.tar.bz2 llvm-55ab7315d04ce4f25a15e5cd50f6a23d950a00cf.tar.xz | |
It adds support for negative zero offsets for loads and stores.
Negative zero is returned by the primary expression parser as INT32_MIN, so all that the method needs to do is to accept this value.
Behavior already present for Thumb2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183734 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 2 | ||||
| -rw-r--r-- | test/MC/ARM/arm-memory-instructions.s | 5 |
2 files changed, 5 insertions, 2 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index 314d37d7d5..c59ca64c11 100644 --- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -994,7 +994,7 @@ public: const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(getImm()); if (!CE) return false; int64_t Val = CE->getValue(); - return Val > -4096 && Val < 4096; + return (Val == INT32_MIN) || (Val > -4096 && Val < 4096); } bool isAddrMode3() const { // If we have an immediate that's not a constant, treat it as a label diff --git a/test/MC/ARM/arm-memory-instructions.s b/test/MC/ARM/arm-memory-instructions.s index d8d9130b69..e9f0c3da7c 100644 --- a/test/MC/ARM/arm-memory-instructions.s +++ b/test/MC/ARM/arm-memory-instructions.s @@ -16,12 +16,14 @@ _func: ldr r2, [r4, #4095]! ldr r1, [r2], #30 ldr r3, [r1], #-30 + ldr r9, [r2], #-0 @ CHECK: ldr r5, [r7] @ encoding: [0x00,0x50,0x97,0xe5] @ CHECK: ldr r6, [r3, #63] @ encoding: [0x3f,0x60,0x93,0xe5] @ CHECK: ldr r2, [r4, #4095]! @ encoding: [0xff,0x2f,0xb4,0xe5] @ CHECK: ldr r1, [r2], #30 @ encoding: [0x1e,0x10,0x92,0xe4] @ CHECK: ldr r3, [r1], #-30 @ encoding: [0x1e,0x30,0x11,0xe4] +@ CHECK: ldr r9, [r2], #-0 @ encoding: [0x00,0x90,0x12,0xe4] @------------------------------------------------------------------------------ @ FIXME: LDR (literal) @@ -308,13 +310,14 @@ Lbaz: .quad 0 str r3, [r5, #40]! str r9, [sp], #4095 str r1, [r7], #-128 + str r1, [r0], #-0 @ CHECK: str r8, [r12] @ encoding: [0x00,0x80,0x8c,0xe5] @ CHECK: str r7, [r1, #12] @ encoding: [0x0c,0x70,0x81,0xe5] @ CHECK: str r3, [r5, #40]! @ encoding: [0x28,0x30,0xa5,0xe5] @ CHECK: str r9, [sp], #4095 @ encoding: [0xff,0x9f,0x8d,0xe4] @ CHECK: str r1, [r7], #-128 @ encoding: [0x80,0x10,0x07,0xe4] - +@ CHECK: str r1, [r0], #-0 @ encoding: [0x00,0x10,0x00,0xe4] @------------------------------------------------------------------------------ @ FIXME: STR (literal) |