mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-07 11:38:04 +00:00
d8f3430e74
llvm-svn: 353178
198 lines
5.2 KiB
LLVM
198 lines
5.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc < %s -mtriple=aarch64-- | FileCheck %s
|
|
|
|
; CodeGenPrepare is expected to form overflow intrinsics to improve DAG/isel.
|
|
|
|
define i1 @usubo_ult_i64(i64 %x, i64 %y, i64* %p) nounwind {
|
|
; CHECK-LABEL: usubo_ult_i64:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: subs x8, x0, x1
|
|
; CHECK-NEXT: cset w0, lo
|
|
; CHECK-NEXT: str x8, [x2]
|
|
; CHECK-NEXT: ret
|
|
%s = sub i64 %x, %y
|
|
store i64 %s, i64* %p
|
|
%ov = icmp ult i64 %x, %y
|
|
ret i1 %ov
|
|
}
|
|
|
|
; Verify insertion point for single-BB. Toggle predicate.
|
|
|
|
define i1 @usubo_ugt_i32(i32 %x, i32 %y, i32* %p) nounwind {
|
|
; CHECK-LABEL: usubo_ugt_i32:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: cmp w1, w0
|
|
; CHECK-NEXT: cset w8, hi
|
|
; CHECK-NEXT: sub w9, w0, w1
|
|
; CHECK-NEXT: mov w0, w8
|
|
; CHECK-NEXT: str w9, [x2]
|
|
; CHECK-NEXT: ret
|
|
%ov = icmp ugt i32 %y, %x
|
|
%s = sub i32 %x, %y
|
|
store i32 %s, i32* %p
|
|
ret i1 %ov
|
|
}
|
|
|
|
; Constant operand should match.
|
|
|
|
define i1 @usubo_ugt_constant_op0_i8(i8 %x, i8* %p) nounwind {
|
|
; CHECK-LABEL: usubo_ugt_constant_op0_i8:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: and w8, w0, #0xff
|
|
; CHECK-NEXT: mov w9, #42
|
|
; CHECK-NEXT: cmp w8, #42 // =42
|
|
; CHECK-NEXT: sub w9, w9, w0
|
|
; CHECK-NEXT: cset w0, hi
|
|
; CHECK-NEXT: strb w9, [x1]
|
|
; CHECK-NEXT: ret
|
|
%s = sub i8 42, %x
|
|
%ov = icmp ugt i8 %x, 42
|
|
store i8 %s, i8* %p
|
|
ret i1 %ov
|
|
}
|
|
|
|
; Compare with constant operand 0 is canonicalized by commuting, but verify match for non-canonical form.
|
|
|
|
define i1 @usubo_ult_constant_op0_i16(i16 %x, i16* %p) nounwind {
|
|
; CHECK-LABEL: usubo_ult_constant_op0_i16:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: and w8, w0, #0xffff
|
|
; CHECK-NEXT: mov w9, #43
|
|
; CHECK-NEXT: cmp w8, #43 // =43
|
|
; CHECK-NEXT: sub w9, w9, w0
|
|
; CHECK-NEXT: cset w0, hi
|
|
; CHECK-NEXT: strh w9, [x1]
|
|
; CHECK-NEXT: ret
|
|
%s = sub i16 43, %x
|
|
%ov = icmp ult i16 43, %x
|
|
store i16 %s, i16* %p
|
|
ret i1 %ov
|
|
}
|
|
|
|
; Subtract with constant operand 1 is canonicalized to add.
|
|
|
|
define i1 @usubo_ult_constant_op1_i16(i16 %x, i16* %p) nounwind {
|
|
; CHECK-LABEL: usubo_ult_constant_op1_i16:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: and w8, w0, #0xffff
|
|
; CHECK-NEXT: cmp w8, #44 // =44
|
|
; CHECK-NEXT: sub w9, w0, #44 // =44
|
|
; CHECK-NEXT: cset w0, lo
|
|
; CHECK-NEXT: strh w9, [x1]
|
|
; CHECK-NEXT: ret
|
|
%s = add i16 %x, -44
|
|
%ov = icmp ult i16 %x, 44
|
|
store i16 %s, i16* %p
|
|
ret i1 %ov
|
|
}
|
|
|
|
define i1 @usubo_ugt_constant_op1_i8(i8 %x, i8* %p) nounwind {
|
|
; CHECK-LABEL: usubo_ugt_constant_op1_i8:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: and w8, w0, #0xff
|
|
; CHECK-NEXT: cmp w8, #45 // =45
|
|
; CHECK-NEXT: cset w8, lo
|
|
; CHECK-NEXT: sub w9, w0, #45 // =45
|
|
; CHECK-NEXT: mov w0, w8
|
|
; CHECK-NEXT: strb w9, [x1]
|
|
; CHECK-NEXT: ret
|
|
%ov = icmp ugt i8 45, %x
|
|
%s = add i8 %x, -45
|
|
store i8 %s, i8* %p
|
|
ret i1 %ov
|
|
}
|
|
|
|
; Special-case: subtract 1 changes the compare predicate and constant.
|
|
|
|
define i1 @usubo_eq_constant1_op1_i32(i32 %x, i32* %p) nounwind {
|
|
; CHECK-LABEL: usubo_eq_constant1_op1_i32:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: cmp w0, #0 // =0
|
|
; CHECK-NEXT: sub w8, w0, #1 // =1
|
|
; CHECK-NEXT: cset w0, eq
|
|
; CHECK-NEXT: str w8, [x1]
|
|
; CHECK-NEXT: ret
|
|
%s = add i32 %x, -1
|
|
%ov = icmp eq i32 %x, 0
|
|
store i32 %s, i32* %p
|
|
ret i1 %ov
|
|
}
|
|
|
|
; Verify insertion point for multi-BB.
|
|
|
|
declare void @call(i1)
|
|
|
|
define i1 @usubo_ult_sub_dominates_i64(i64 %x, i64 %y, i64* %p, i1 %cond) nounwind {
|
|
; CHECK-LABEL: usubo_ult_sub_dominates_i64:
|
|
; CHECK: // %bb.0: // %entry
|
|
; CHECK-NEXT: tbz w3, #0, .LBB7_2
|
|
; CHECK-NEXT: // %bb.1: // %t
|
|
; CHECK-NEXT: subs x8, x0, x1
|
|
; CHECK-NEXT: cset w0, lo
|
|
; CHECK-NEXT: str x8, [x2]
|
|
; CHECK-NEXT: ret
|
|
; CHECK-NEXT: .LBB7_2: // %f
|
|
; CHECK-NEXT: and w0, w3, #0x1
|
|
; CHECK-NEXT: ret
|
|
entry:
|
|
br i1 %cond, label %t, label %f
|
|
|
|
t:
|
|
%s = sub i64 %x, %y
|
|
store i64 %s, i64* %p
|
|
br i1 %cond, label %end, label %f
|
|
|
|
f:
|
|
ret i1 %cond
|
|
|
|
end:
|
|
%ov = icmp ult i64 %x, %y
|
|
ret i1 %ov
|
|
}
|
|
|
|
define i1 @usubo_ult_cmp_dominates_i64(i64 %x, i64 %y, i64* %p, i1 %cond) nounwind {
|
|
; CHECK-LABEL: usubo_ult_cmp_dominates_i64:
|
|
; CHECK: // %bb.0: // %entry
|
|
; CHECK-NEXT: str x22, [sp, #-48]! // 8-byte Folded Spill
|
|
; CHECK-NEXT: stp x21, x20, [sp, #16] // 16-byte Folded Spill
|
|
; CHECK-NEXT: mov w20, w3
|
|
; CHECK-NEXT: stp x19, x30, [sp, #32] // 16-byte Folded Spill
|
|
; CHECK-NEXT: tbz w3, #0, .LBB8_3
|
|
; CHECK-NEXT: // %bb.1: // %t
|
|
; CHECK-NEXT: cmp x0, x1
|
|
; CHECK-NEXT: mov x22, x0
|
|
; CHECK-NEXT: cset w0, lo
|
|
; CHECK-NEXT: mov x19, x2
|
|
; CHECK-NEXT: mov x21, x1
|
|
; CHECK-NEXT: bl call
|
|
; CHECK-NEXT: subs x8, x22, x21
|
|
; CHECK-NEXT: b.hs .LBB8_3
|
|
; CHECK-NEXT: // %bb.2: // %end
|
|
; CHECK-NEXT: cset w0, lo
|
|
; CHECK-NEXT: str x8, [x19]
|
|
; CHECK-NEXT: b .LBB8_4
|
|
; CHECK-NEXT: .LBB8_3: // %f
|
|
; CHECK-NEXT: and w0, w20, #0x1
|
|
; CHECK-NEXT: .LBB8_4: // %f
|
|
; CHECK-NEXT: ldp x19, x30, [sp, #32] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldp x21, x20, [sp, #16] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldr x22, [sp], #48 // 8-byte Folded Reload
|
|
; CHECK-NEXT: ret
|
|
entry:
|
|
br i1 %cond, label %t, label %f
|
|
|
|
t:
|
|
%ov = icmp ult i64 %x, %y
|
|
call void @call(i1 %ov)
|
|
br i1 %ov, label %end, label %f
|
|
|
|
f:
|
|
ret i1 %cond
|
|
|
|
end:
|
|
%s = sub i64 %x, %y
|
|
store i64 %s, i64* %p
|
|
ret i1 %ov
|
|
}
|
|
|