llvm-6502/test/CodeGen/SPARC/leafproc.ll
Tim Northover a9a94ce839 TableGen: fix operand counting for aliases
TableGen has a fairly dubious heuristic to decide whether an alias should be
printed: does the alias have lest operands than the real instruction. This is
bad enough (particularly with no way to override it), but it should at least be
calculated consistently for both strings.

This patch implements that logic: first get the *correct* string for the
variant, in the same way as the Matcher, without guessing; then count the
number of whitespace chars.

There are basically 4 changes this brings about after the previous
commits; all of these appear to be good, so I have changed the tests:

+ ARM64: we print "neg X, Y" instead of "sub X, xzr, Y".
+ ARM64: we skip implicit "uxtx" and "uxtw" modifiers.
+ Sparc: we print "mov A, B" instead of "or %g0, A, B".
+ Sparc: we print "fcmpX A, B" instead of "fcmpX %fcc0, A, B"

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208969 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-16 09:42:04 +00:00

81 lines
2.0 KiB
LLVM

; RUN: llc -march=sparc -disable-sparc-leaf-proc=0 < %s | FileCheck %s
; CHECK-LABEL: func_nobody:
; CHECK: retl
; CHECK-NEXT: nop
define void @func_nobody() {
entry:
ret void
}
; CHECK-LABEL: return_int_const:
; CHECK: retl
; CHECK-NEXT: mov 1729, %o0
define i32 @return_int_const() {
entry:
ret i32 1729
}
; CHECK-LABEL: return_double_const:
; CHECK: sethi
; CHECK: retl
; CHECK-NEXT: ldd {{.*}}, %f0
define double @return_double_const() {
entry:
ret double 0.000000e+00
}
; CHECK-LABEL: leaf_proc_with_args:
; CHECK: add {{%o[0-1]}}, {{%o[0-1]}}, [[R:%[go][0-7]]]
; CHECK: retl
; CHECK-NEXT: add [[R]], %o2, %o0
define i32 @leaf_proc_with_args(i32 %a, i32 %b, i32 %c) {
entry:
%0 = add nsw i32 %b, %a
%1 = add nsw i32 %0, %c
ret i32 %1
}
; CHECK-LABEL: leaf_proc_with_args_in_stack:
; CHECK-DAG: ld [%sp+92], {{%[go][0-7]}}
; CHECK-DAG: ld [%sp+96], {{%[go][0-7]}}
; CHECK: retl
; CHECK-NEXT: add {{.*}}, %o0
define i32 @leaf_proc_with_args_in_stack(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h) {
entry:
%0 = add nsw i32 %b, %a
%1 = add nsw i32 %0, %c
%2 = add nsw i32 %1, %d
%3 = add nsw i32 %2, %e
%4 = add nsw i32 %3, %f
%5 = add nsw i32 %4, %g
%6 = add nsw i32 %5, %h
ret i32 %6
}
; CHECK-LABEL: leaf_proc_with_local_array:
; CHECK: add %sp, -104, %sp
; CHECK: mov 1, [[R1:%[go][0-7]]]
; CHECK: st [[R1]], [%sp+96]
; CHECK: mov 2, [[R2:%[go][0-7]]]
; CHECK: st [[R2]], [%sp+100]
; CHECK: ld {{.+}}, %o0
; CHECK: retl
; CHECK-NEXT: add %sp, 104, %sp
define i32 @leaf_proc_with_local_array(i32 %a, i32 %b, i32 %c) {
entry:
%array = alloca [2 x i32], align 4
%0 = sub nsw i32 %b, %c
%1 = getelementptr inbounds [2 x i32]* %array, i32 0, i32 0
store i32 1, i32* %1, align 4
%2 = getelementptr inbounds [2 x i32]* %array, i32 0, i32 1
store i32 2, i32* %2, align 4
%3 = getelementptr inbounds [2 x i32]* %array, i32 0, i32 %a
%4 = load i32* %3, align 4
ret i32 %4
}