You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.7 KiB
58 lines
1.7 KiB
4 months ago
|
; RUN: llc < %s -mtriple=arm-linux -mcpu=generic | FileCheck %s
|
||
|
|
|
||
|
|
define i32 @uadd_overflow(i32 %a, i32 %b) #0 {
|
||
|
|
%sadd = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%1 = extractvalue { i32, i1 } %sadd, 1
|
||
|
|
%2 = zext i1 %1 to i32
|
||
|
|
ret i32 %2
|
||
|
|
|
||
|
|
; CHECK-LABEL: uadd_overflow:
|
||
|
|
; CHECK: add r[[R2:[0-9]+]], r[[R0:[0-9]+]], r[[R1:[0-9]+]]
|
||
|
|
; CHECK: mov r[[R1]], #1
|
||
|
|
; CHECK: cmp r[[R2]], r[[R0]]
|
||
|
|
; CHECK: movhs r[[R1]], #0
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
define i32 @sadd_overflow(i32 %a, i32 %b) #0 {
|
||
|
|
%sadd = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%1 = extractvalue { i32, i1 } %sadd, 1
|
||
|
|
%2 = zext i1 %1 to i32
|
||
|
|
ret i32 %2
|
||
|
|
|
||
|
|
; CHECK-LABEL: sadd_overflow:
|
||
|
|
; CHECK: add r[[R2:[0-9]+]], r[[R0:[0-9]+]], r[[R1:[0-9]+]]
|
||
|
|
; CHECK: mov r[[R1]], #1
|
||
|
|
; CHECK: cmp r[[R2]], r[[R0]]
|
||
|
|
; CHECK: movvc r[[R1]], #0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @usub_overflow(i32 %a, i32 %b) #0 {
|
||
|
|
%sadd = tail call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%1 = extractvalue { i32, i1 } %sadd, 1
|
||
|
|
%2 = zext i1 %1 to i32
|
||
|
|
ret i32 %2
|
||
|
|
|
||
|
|
; CHECK-LABEL: usub_overflow:
|
||
|
|
; CHECK: mov r[[R2]], #1
|
||
|
|
; CHECK: cmp r[[R0]], r[[R1]]
|
||
|
|
; CHECK: movhs r[[R2]], #0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @ssub_overflow(i32 %a, i32 %b) #0 {
|
||
|
|
%sadd = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%1 = extractvalue { i32, i1 } %sadd, 1
|
||
|
|
%2 = zext i1 %1 to i32
|
||
|
|
ret i32 %2
|
||
|
|
|
||
|
|
; CHECK-LABEL: ssub_overflow:
|
||
|
|
; CHECK: mov r[[R2]], #1
|
||
|
|
; CHECK: cmp r[[R0]], r[[R1]]
|
||
|
|
; CHECK: movvc r[[R2]], #0
|
||
|
|
}
|
||
|
|
|
||
|
|
declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1
|
||
|
|
declare { i32, i1 } @llvm.sadd.with.overflow.i32(i32, i32) #2
|
||
|
|
declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) #3
|
||
|
|
declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32) #4
|