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[ARM64] Correctly alias LSL to UXTW for 32bit instruction variants, rather than UXTX 

llvm-svn: 205861
This commit is contained in:
Bradley Smith 2014-04-09 14:41:53 +00:00
parent 35cadc58c9
commit 664aa67153
3 changed files with 7 additions and 7 deletions
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6
llvm/lib/Target/ARM64/AsmParser/ARM64AsmParser.cpp
View File

@ -714,7 +714,7 @@ public:
bool isPrefetch() const { return Kind == k_Prefetch; }
bool isShifter() const { return Kind == k_Shifter; }
bool isExtend() const {
// lsl is an alias for UXTX but will be a parsed as a k_Shifter operand.
// lsl is an alias for UXTW but will be a parsed as a k_Shifter operand.
if (isShifter()) {
ARM64_AM::ShiftType ST = ARM64_AM::getShiftType(Shifter.Val);
return ST == ARM64_AM::LSL;
@ -1346,10 +1346,10 @@ public:
void addExtendOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
// lsl is an alias for UXTX but will be a parsed as a k_Shifter operand.
// lsl is an alias for UXTW but will be a parsed as a k_Shifter operand.
if (isShifter()) {
assert(ARM64_AM::getShiftType(getShifter()) == ARM64_AM::LSL);
unsigned imm = getArithExtendImm(ARM64_AM::UXTX,
unsigned imm = getArithExtendImm(ARM64_AM::UXTW,
ARM64_AM::getShiftValue(getShifter()));
Inst.addOperand(MCOperand::CreateImm(imm));
} else

2
llvm/test/MC/ARM64/aliases.s
View File

@ -103,7 +103,7 @@ foo:
; CHECK: cmp wzr, w1 ; encoding: [0xff,0x03,0x01,0x6b]
; CHECK: cmp x8, w8, uxtw ; encoding: [0x1f,0x41,0x28,0xeb]
; CHECK: cmp w9, w8, uxtw ; encoding: [0x3f,0x41,0x28,0x6b]
; CHECK: cmp wsp, w9 ; encoding: [0xff,0x63,0x29,0x6b]
; CHECK: cmp wsp, w9 ; encoding: [0xff,0x43,0x29,0x6b]
;-----------------------------------------------------------------------------

6
llvm/test/MC/ARM64/arithmetic-encoding.s
View File

@ -223,7 +223,7 @@ foo:
; CHECK: add w1, wsp, w3 ; encoding: [0xe1,0x43,0x23,0x0b]
; CHECK: add w1, wsp, w3 ; encoding: [0xe1,0x43,0x23,0x0b]
; CHECK: add w2, wsp, w3, lsl #1 ; encoding: [0xe2,0x67,0x23,0x0b]
; CHECK: add w2, wsp, w3, lsl #1 ; encoding: [0xe2,0x47,0x23,0x0b]
; CHECK: add sp, x2, x3 ; encoding: [0x5f,0x60,0x23,0x8b]
; CHECK: add sp, x2, x3 ; encoding: [0x5f,0x60,0x23,0x8b]
@ -313,7 +313,7 @@ foo:
; CHECK: adds w1, wsp, w3 ; encoding: [0xe1,0x43,0x23,0x2b]
; CHECK: adds w1, wsp, w3 ; encoding: [0xe1,0x43,0x23,0x2b]
; CHECK: adds wzr, wsp, w3, lsl #4 ; encoding: [0xff,0x73,0x23,0x2b]
; CHECK: adds wzr, wsp, w3, lsl #4 ; encoding: [0xff,0x53,0x23,0x2b]
subs w1, w2, w3, uxtb
subs w1, w2, w3, uxth
@ -364,7 +364,7 @@ foo:
cmp sp, w8, uxtw
subs xzr, sp, w8, uxtw
; CHECK: cmp wsp, w9 ; encoding: [0xff,0x63,0x29,0x6b]
; CHECK: cmp wsp, w9 ; encoding: [0xff,0x43,0x29,0x6b]
; CHECK: subs x3, sp, x9, lsl #2 ; encoding: [0xe3,0x6b,0x29,0xeb]
; CHECK: cmp wsp, w8 ; encoding: [0xff,0x43,0x28,0x6b]
; CHECK: cmp wsp, w8 ; encoding: [0xff,0x43,0x28,0x6b]