The Thumb2 LDRS?[BH] instructions are not valid when the destination
register is the PC (these encodings are used for preload hints).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220278
91177308-0d34-0410-b5e6-
96231b3b80d8
// Loads with zero extension
defm t2LDRH : T2I_ld<0, 0b01, "ldrh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
// Loads with zero extension
defm t2LDRH : T2I_ld<0, 0b01, "ldrh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
- GPR, UnOpFrag<(zextloadi16 node:$Src)>>;
+ GPRnopc, UnOpFrag<(zextloadi16 node:$Src)>>;
defm t2LDRB : T2I_ld<0, 0b00, "ldrb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
defm t2LDRB : T2I_ld<0, 0b00, "ldrb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
- GPR, UnOpFrag<(zextloadi8 node:$Src)>>;
+ GPRnopc, UnOpFrag<(zextloadi8 node:$Src)>>;
// Loads with sign extension
defm t2LDRSH : T2I_ld<1, 0b01, "ldrsh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
// Loads with sign extension
defm t2LDRSH : T2I_ld<1, 0b01, "ldrsh", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
- GPR, UnOpFrag<(sextloadi16 node:$Src)>>;
+ GPRnopc, UnOpFrag<(sextloadi16 node:$Src)>>;
defm t2LDRSB : T2I_ld<1, 0b00, "ldrsb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
defm t2LDRSB : T2I_ld<1, 0b00, "ldrsb", IIC_iLoad_bh_i, IIC_iLoad_bh_si,
- GPR, UnOpFrag<(sextloadi8 node:$Src)>>;
+ GPRnopc, UnOpFrag<(sextloadi8 node:$Src)>>;
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1 in {
// Load doubleword
let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1 in {
// Load doubleword
--- /dev/null
+@ RUN: not llvm-mc -triple thumbv7a-none-eabi -show-encoding < %s 2>&1 | FileCheck %s --check-prefix=CHECK
+@ RUN: not llvm-mc -triple thumbv7m-none-eabi -show-encoding < %s 2>&1 | FileCheck %s --check-prefix=CHECK
+
+@ Thumb2 LDRS?[BH] are not valid when Rt == PC (these encodings are used for
+@ preload hints).
+@ We don't check the actual error messages here as they are currently not very
+@ helpful, see http://llvm.org/bugs/show_bug.cgi?id=21066.
+
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+ ldrb pc, [r0, #10]
+ ldrb.w pc, [r1, #10]
+ ldrb pc, [r2, #-5]
+ ldrb pc, [pc, #7]
+ ldrb.w pc, [pc, #7]
+
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+ ldrsb pc, [r3, #10]
+ ldrsb.w pc, [r4, #10]
+ ldrsb pc, [r5, #-5]
+ ldrsb pc, [pc, #7]
+ ldrsb.w pc, [pc, #7]
+
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+ ldrh pc, [r6, #10]
+ ldrh.w pc, [r7, #10]
+ ldrh pc, [r8, #-5]
+ ldrh pc, [pc, #7]
+ ldrh.w pc, [pc, #7]
+
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+@ CHECK: error:
+ ldrsh pc, [r9, #10]
+ ldrsh.w pc, [r10, #10]
+ ldrsh pc, [r11, #-5]
+ ldrsh pc, [pc, #7]
+ ldrsh.w pc, [pc, #7]