File: macro-fusion-lui-addi.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (44 lines) | stat: -rw-r--r-- 1,353 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
;RUN: llc < %s -mtriple=riscv64 -mattr=+f -mcpu=sifive-u74 -target-abi=lp64f \
;RUN:   | FileCheck %s --check-prefix=NOFUSION
;RUN: llc < %s -mtriple=riscv64 -mattr=+f,+lui-addi-fusion -mcpu=sifive-u74 \
;RUN:   -target-abi=lp64f | FileCheck %s --check-prefix=FUSION

@.str = private constant [4 x i8] c"%f\0A\00", align 1

define void @foo(i32 signext %0, i32 signext %1) {
; NOFUSION-LABEL: foo:
; NOFUSION:       # %bb.0:
; NOFUSION-NEXT:    lui a0, %hi(.L.str)
; NOFUSION-NEXT:    fcvt.s.w fa0, a1
; NOFUSION-NEXT:    addi a0, a0, %lo(.L.str)
; NOFUSION-NEXT:    tail bar@plt
;
; FUSION-LABEL: foo:
; FUSION:       # %bb.0:
; FUSION-NEXT:    fcvt.s.w fa0, a1
; FUSION-NEXT:    lui a0, %hi(.L.str)
; FUSION-NEXT:    addi a0, a0, %lo(.L.str)
; FUSION-NEXT:    tail bar@plt
  %3 = sitofp i32 %1 to float
  tail call void @bar(ptr @.str, float %3)
  ret void
}

declare void @bar(ptr, float)

; Test that we prefer lui+addiw over li+slli.
define i32 @test_matint() {
; NOFUSION-LABEL: test_matint:
; NOFUSION:       # %bb.0:
; NOFUSION-NEXT:    li a0, 1
; NOFUSION-NEXT:    slli a0, a0, 11
; NOFUSION-NEXT:    ret
;
; FUSION-LABEL: test_matint:
; FUSION:       # %bb.0:
; FUSION-NEXT:    lui a0, 1
; FUSION-NEXT:    addiw a0, a0, -2048
; FUSION-NEXT:    ret
  ret i32 2048
}