2017-08-02 08:28:10 +08:00
|
|
|
; RUN: llc < %s -mtriple=x86_64-- -O0 | FileCheck %s
|
2013-02-22 09:50:38 +08:00
|
|
|
; Make sure fast-isel doesn't reset the materialised constant map
|
|
|
|
|
; across an intrinsic call.
|
|
|
|
|
|
|
|
|
|
; CHECK: movl $100000
|
|
|
|
|
; CHECK-NOT: movl $100000
|
|
|
|
|
define i1 @test1(i32 %v1, i32 %v2, i32* %X) nounwind {
|
|
|
|
|
entry:
|
|
|
|
|
%a = shl i32 100000, %v1
|
|
|
|
|
%t = call {i32, i1} @llvm.sadd.with.overflow.i32(i32 %a, i32 %v2)
|
|
|
|
|
%ext = extractvalue {i32, i1} %t, 0
|
|
|
|
|
%sum = shl i32 100000, %ext
|
|
|
|
|
%obit = extractvalue {i32, i1} %t, 1
|
|
|
|
|
br i1 %obit, label %overflow, label %normal
|
|
|
|
|
|
|
|
|
|
normal:
|
|
|
|
|
store i32 %sum, i32* %X
|
|
|
|
|
br label %overflow
|
|
|
|
|
|
|
|
|
|
overflow:
|
|
|
|
|
ret i1 false
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
declare {i32, i1} @llvm.sadd.with.overflow.i32(i32, i32)
|
