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TheRock/compiler/amd-llvm/llvm/test/CodeGen/M68k/Bits/btst.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

63 lines
1.6 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=m68k-freestanding -verify-machineinstrs | FileCheck %s
define fastcc i16 @switch_to_btst(i16 %a) nounwind {
; CHECK-LABEL: switch_to_btst:
; CHECK: ; %bb.0: ; %entry
; CHECK-NEXT: move.l %d0, %d1
; CHECK-NEXT: and.l #65535, %d1
; CHECK-NEXT: sub.l #11, %d1
; CHECK-NEXT: bhi .LBB0_3
; CHECK-NEXT: ; %bb.1: ; %entry
; CHECK-NEXT: and.l #65535, %d0
; CHECK-NEXT: move.l #3612, %d1
; CHECK-NEXT: btst %d0, %d1
; CHECK-NEXT: beq .LBB0_3
; CHECK-NEXT: ; %bb.2: ; %match
; CHECK-NEXT: moveq #1, %d0
; CHECK-NEXT: rts
; CHECK-NEXT: .LBB0_3: ; %no_match
; CHECK-NEXT: moveq #0, %d0
; CHECK-NEXT: rts
entry:
switch i16 %a, label %no_match [
i16 11, label %match
i16 10, label %match
i16 9, label %match
i16 4, label %match
i16 3, label %match
i16 2, label %match
]
match:
ret i16 1
no_match:
ret i16 0
}
define fastcc i16 @and_mask_to_btst(i8 %a, i8 %b) nounwind {
; CHECK-LABEL: and_mask_to_btst:
; CHECK: ; %bb.0:
; CHECK-NEXT: and.l #7, %d1
; CHECK-NEXT: btst %d1, %d0
; CHECK-NEXT: beq .LBB1_1
; CHECK-NEXT: ; %bb.2: ; %cond_false
; CHECK-NEXT: moveq #0, %d0
; CHECK-NEXT: rts
; CHECK-NEXT: .LBB1_1: ; %cond_true
; CHECK-NEXT: moveq #1, %d0
; CHECK-NEXT: rts
%33 = and i8 %b, 7
%34 = shl nuw i8 1, %33
%35 = and i8 %34, %a
%.not = icmp eq i8 %35, 0
br i1 %.not, label %cond_true, label %cond_false
cond_true:
ret i16 1
cond_false:
ret i16 0
}