From 38e6d45a463ab5bcc0cab1df88e7e6886512c206 Mon Sep 17 00:00:00 2001 From: Oliver Stannard Date: Tue, 21 Oct 2014 09:14:15 +0000 Subject: [Thumb2] LDRS?[BH] cannot load to the PC The Thumb2 LDRS?[BH] instructions are not valid when the destination register is the PC (these encodings are used for preload hints). llvm-svn: 220278 --- llvm/lib/Target/ARM/ARMInstrThumb2.td | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'llvm/lib/Target') diff --git a/llvm/lib/Target/ARM/ARMInstrThumb2.td b/llvm/lib/Target/ARM/ARMInstrThumb2.td index 7e5c9bcbe75..807c2524863 100644 --- a/llvm/lib/Target/ARM/ARMInstrThumb2.td +++ b/llvm/lib/Target/ARM/ARMInstrThumb2.td @@ -1262,15 +1262,15 @@ defm t2LDR : T2I_ld<0, 0b10, "ldr", IIC_iLoad_i, IIC_iLoad_si, GPR, // 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, - 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, - 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, - GPR, UnOpFrag<(sextloadi8 node:$Src)>>; + GPRnopc, UnOpFrag<(sextloadi8 node:$Src)>>; let mayLoad = 1, neverHasSideEffects = 1, hasExtraDefRegAllocReq = 1 in { // Load doubleword -- cgit v1.2.3