40 lines
804 B
LLVM
40 lines
804 B
LLVM
; Test the three-operand forms of subtraction.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
|
|
|
|
; Check SRK.
|
|
define i32 @f1(i32 %a, i32 %b, i32 %c) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: srk %r2, %r3, %r4
|
|
; CHECK: br %r14
|
|
%sub = sub i32 %b, %c
|
|
ret i32 %sub
|
|
}
|
|
|
|
; Check that we can still use SR in obvious cases.
|
|
define i32 @f2(i32 %a, i32 %b) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: sr %r2, %r3
|
|
; CHECK: br %r14
|
|
%sub = sub i32 %a, %b
|
|
ret i32 %sub
|
|
}
|
|
|
|
; Check SGRK.
|
|
define i64 @f3(i64 %a, i64 %b, i64 %c) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: sgrk %r2, %r3, %r4
|
|
; CHECK: br %r14
|
|
%sub = sub i64 %b, %c
|
|
ret i64 %sub
|
|
}
|
|
|
|
; Check that we can still use SGR in obvious cases.
|
|
define i64 @f4(i64 %a, i64 %b) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: sgr %r2, %r3
|
|
; CHECK: br %r14
|
|
%sub = sub i64 %a, %b
|
|
ret i64 %sub
|
|
}
|