diff options
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb.td | 2 | ||||
| -rw-r--r-- | lib/Target/ARM/ARMInstrThumb2.td | 2 | ||||
| -rw-r--r-- | test/CodeGen/Thumb2/thumb2-rev.ll | 13 |
3 files changed, 15 insertions, 2 deletions
diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td index 48f3eee..bae9afe 100644 --- a/lib/Target/ARM/ARMInstrThumb.td +++ b/lib/Target/ARM/ARMInstrThumb.td @@ -543,7 +543,7 @@ def tREVSH : T1pI<(outs tGPR:$dst), (ins tGPR:$src), IIC_iALU, "revsh", " $dst, $src", [(set tGPR:$dst, (sext_inreg - (or (srl (and tGPR:$src, 0xFFFF), (i32 8)), + (or (srl (and tGPR:$src, 0xFF00), (i32 8)), (shl tGPR:$src, (i32 8))), i16))]>, Requires<[IsThumb1Only, HasV6]>; diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td index 840a6bb..1eafd2e 100644 --- a/lib/Target/ARM/ARMInstrThumb2.td +++ b/lib/Target/ARM/ARMInstrThumb2.td @@ -951,7 +951,7 @@ def t2REVSH : T2I<(outs GPR:$dst), (ins GPR:$src), IIC_iALU, "revsh", ".w $dst, $src", [(set GPR:$dst, (sext_inreg - (or (srl (and GPR:$src, 0xFFFF), (i32 8)), + (or (srl (and GPR:$src, 0xFF00), (i32 8)), (shl GPR:$src, (i32 8))), i16))]>; def t2PKHBT : T2I<(outs GPR:$dst), (ins GPR:$src1, GPR:$src2, i32imm:$shamt), diff --git a/test/CodeGen/Thumb2/thumb2-rev.ll b/test/CodeGen/Thumb2/thumb2-rev.ll index c1bdc38..4205ed1 100644 --- a/test/CodeGen/Thumb2/thumb2-rev.ll +++ b/test/CodeGen/Thumb2/thumb2-rev.ll @@ -8,3 +8,16 @@ define i32 @f1(i32 %a) { } declare i32 @llvm.bswap.i32(i32) nounwind readnone + +define i32 @f2(i32 %X) { +; CHECK: f2: +; CHECK: revsh r0, r0 + %tmp1 = lshr i32 %X, 8 + %tmp1.upgrd.1 = trunc i32 %tmp1 to i16 + %tmp3 = trunc i32 %X to i16 + %tmp2 = and i16 %tmp1.upgrd.1, 255 + %tmp4 = shl i16 %tmp3, 8 + %tmp5 = or i16 %tmp2, %tmp4 + %tmp5.upgrd.2 = sext i16 %tmp5 to i32 + ret i32 %tmp5.upgrd.2 +} |