db158c7c83
Refresh of the generic scheduling model to use A510 instead of A55. Main benefits are to the little core, and introducing SVE scheduling information. Changes tested on various OoO cores, no performance degradation is seen. Differential Revision: https://reviews.llvm.org/D156799
59 lines
1.8 KiB
LLVM
59 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
|
|
; RUN: llc -mtriple=aarch64-none-linux-gnu -aarch64-enable-atomic-cfg-tidy=0 -verify-machineinstrs -o - %s | FileCheck %s
|
|
|
|
; LLVM should be able to cope with multiple uses of the same flag-setting
|
|
; instruction at different points of a routine. Either by rematerializing the
|
|
; compare or by saving and restoring the flag register.
|
|
|
|
declare void @bar()
|
|
|
|
@var = global i32 0
|
|
|
|
define i32 @test_multiflag(i32 %n, i32 %m, i32 %o) {
|
|
; CHECK-LABEL: test_multiflag:
|
|
; CHECK: // %bb.0:
|
|
; CHECK-NEXT: str x30, [sp, #-32]! // 8-byte Folded Spill
|
|
; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 32
|
|
; CHECK-NEXT: .cfi_offset w19, -8
|
|
; CHECK-NEXT: .cfi_offset w20, -16
|
|
; CHECK-NEXT: .cfi_offset w30, -32
|
|
; CHECK-NEXT: adrp x8, :got:var
|
|
; CHECK-NEXT: cmp w0, w1
|
|
; CHECK-NEXT: mov w19, w1
|
|
; CHECK-NEXT: ldr x8, [x8, :got_lo12:var]
|
|
; CHECK-NEXT: cset w9, ne
|
|
; CHECK-NEXT: mov w20, w0
|
|
; CHECK-NEXT: str w9, [x8]
|
|
; CHECK-NEXT: bl bar
|
|
; CHECK-NEXT: cmp w20, w19
|
|
; CHECK-NEXT: b.eq .LBB0_2
|
|
; CHECK-NEXT: // %bb.1: // %iftrue
|
|
; CHECK-NEXT: mov w0, #42 // =0x2a
|
|
; CHECK-NEXT: b .LBB0_3
|
|
; CHECK-NEXT: .LBB0_2: // %iffalse
|
|
; CHECK-NEXT: mov w0, wzr
|
|
; CHECK-NEXT: .LBB0_3: // %iftrue
|
|
; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload
|
|
; CHECK-NEXT: ldr x30, [sp], #32 // 8-byte Folded Reload
|
|
; CHECK-NEXT: ret
|
|
|
|
%test = icmp ne i32 %n, %m
|
|
|
|
%val = zext i1 %test to i32
|
|
|
|
|
|
store i32 %val, ptr @var
|
|
|
|
call void @bar()
|
|
|
|
; Currently, the comparison is emitted again. An MSR/MRS pair would also be
|
|
; acceptable, but assuming the call preserves NZCV is not.
|
|
br i1 %test, label %iftrue, label %iffalse
|
|
|
|
iftrue:
|
|
ret i32 42
|
|
iffalse:
|
|
ret i32 0
|
|
}
|