xref: /llvm-project/llvm/test/CodeGen/X86/inline-asm-tied.ll (revision 9d7bb0cb408e993181fc1b28986c7eb3495f28b9)
1; RUN: llc < %s -mtriple=i386-apple-darwin9 -O0 -optimize-regalloc -regalloc=basic -no-integrated-as | FileCheck %s
2; rdar://6992609
3
4target triple = "i386-apple-darwin9.0"
5
6define i64 @_OSSwapInt64(i64 %_data) nounwind {
7entry:
8  %0 = call i64 asm "bswap   %eax\0A\09bswap   %edx\0A\09xchgl   %eax, %%edx", "=A,0,~{dirflag},~{fpsr},~{flags}"(i64 %_data) nounwind
9  ret i64 %0
10}
11
12; CHECK-LABEL: __OSSwapInt64:
13; CHECK-DAG: movl 8(%esp), %edx
14; CHECK-DAG: movl 4(%esp), %eax
15; CHECK: ## InlineAsm Start
16; CHECK: ## InlineAsm End
17;       Everything is set up in eax:edx, return immediately.
18; CHECK-NEXT: retl
19
20; The tied operands are not necessarily in the same order as the defs.
21; PR13742
22define i64 @swapped(i64 %x, i64 %y) nounwind {
23entry:
24  %x0 = call { i64, i64 } asm "foo", "=r,=r,1,0,~{dirflag},~{fpsr},~{flags}"(i64 %x, i64 %y) nounwind
25  %x1 = extractvalue { i64, i64 } %x0, 0
26  ret i64 %x1
27}
28