File: int-sub-09.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (22 lines) | stat: -rw-r--r-- 775 bytes parent folder | download | duplicates (17) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
; Test 128-bit subtraction when the distinct-operands facility is available.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s

; Test the case where both operands are in registers.
define i64 @f1(i64 %a, i64 %b, i64 %c, i64 %d, ptr %ptr) {
; CHECK-LABEL: f1:
; CHECK: slgrk %r2, %r4, %r5
; CHECK: slbgr
; CHECK: br %r14
  %x1 = insertelement <2 x i64> undef, i64 %b, i32 0
  %x2 = insertelement <2 x i64> %x1, i64 %c, i32 1
  %x = bitcast <2 x i64> %x2 to i128
  %y2 = insertelement <2 x i64> %x1, i64 %d, i32 1
  %y = bitcast <2 x i64> %y2 to i128
  %sub = sub i128 %x, %y
  %subv = bitcast i128 %sub to <2 x i64>
  %high = extractelement <2 x i64> %subv, i32 0
  store i64 %high, ptr %ptr
  %low = extractelement <2 x i64> %subv, i32 1
  ret i64 %low
}