llvm-6502/test/CodeGen/X86/fast-isel-constant.ll
2013-02-22 18:16:21 +00:00

25 lines
644 B
LLVM

; RUN: llc < %s -march=x86-64 -O0 | FileCheck %s
; 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)