llvm-mirror/test/CodeGen/PowerPC/2009-07-16-InlineAsm-M-Operand.ll

; RUN: llc < %s -march=ppc32 -verify-machineinstrs

; Machine code verifier will call isRegTiedToDefOperand() on /all/ register use
; operands.  We must make sure that the operand flag is found correctly.

; This test case is actually not specific to PowerPC, but the (imm, reg) format
; of PowerPC "m" operands trigger this bug.

define void @memory_asm_operand(i32 %a) {
  ; "m" operand will be represented as:
  ; INLINEASM <es:fake $0>, 10, %R2, 20, -4, %R1
  ; It is difficult to find the flag operand (20) when starting from %R1
  call i32 asm "lbzx $0, $1", "=r,m" (i32 %a)
  ret void
}
Eliminate more uses of llvm-as and llvm-dis. llvm-svn: 81293 2009-09-09 02:09:15 +02:00			`; RUN: llc < %s -march=ppc32 -verify-machineinstrs`
Teach MachineInstr::isRegTiedToDefOperand() to correctly parse inline asm operands. The inline asm operands must be parsed from the first flag, you cannot assume that an immediate operand preceeding a register use operand is the flag. PowerPC "m" operands are represented as (flag, imm, reg) triples. isRegTiedToDefOperand() would incorrectly interpret the imm as the flag. llvm-svn: 76101 2009-07-16 22:58:34 +02:00
			`; Machine code verifier will call isRegTiedToDefOperand() on /all/ register use`
			`; operands. We must make sure that the operand flag is found correctly.`

			`; This test case is actually not specific to PowerPC, but the (imm, reg) format`
			`; of PowerPC "m" operands trigger this bug.`

			`define void @memory_asm_operand(i32 %a) {`
			`; "m" operand will be represented as:`
			`; INLINEASM <es:fake $0>, 10, %R2, 20, -4, %R1`
			`; It is difficult to find the flag operand (20) when starting from %R1`
			`call i32 asm "lbzx $0, $1", "=r,m" (i32 %a)`
			`ret void`
			`}`