1 ; RUN: llc -verify-machineinstrs < %s | FileCheck %s 2 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" 3 target triple = "i686-pc-windows-msvc18.0.0" 4 5 %struct.T = type { i64, [3 x i32] } 6 7 ; Function Attrs: nounwind optsize 8 define void @f(i8* %p, i8* %q, i32* inalloca nocapture %unused) #0 { 9 entry: 10 %g = alloca %struct.T, align 8 11 %r = alloca i32, align 8 12 store i32 0, i32* %r, align 4 13 call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %p, i8* align 8 %q, i32 24, i1 false) 14 br label %while.body 15 16 while.body: ; preds = %while.body, %entry 17 %load = load i32, i32* %r, align 4 18 %dec = add nsw i32 %load, -1 19 store i32 %dec, i32* %r, align 4 20 call void @g(%struct.T* %g) 21 %tobool = icmp eq i32 %dec, 0 22 br i1 %tobool, label %while.end, label %while.body 23 24 while.end: ; preds = %while.body 25 ret void 26 } 27 28 ; Function Attrs: argmemonly nounwind 29 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i1) #1 30 31 declare void @g(%struct.T*) 32 33 ; CHECK-LABEL: _f: 34 ; CHECK: pushl %ebp 35 ; CHECK: movl %esp, %ebp 36 ; CHECK: andl $-8, %esp 37 ; CHECK-NOT: movl %esp, %esi 38 ; CHECK: rep;movsl 39 ; CHECK: leal 8(%esp), %esi 40 41 ; CHECK: decl (%esp) 42 ; CHECK: setne %[[NE_REG:.*]] 43 ; CHECK: pushl %esi 44 ; CHECK: calll _g 45 ; CHECK: addl $4, %esp 46 ; CHECK: testb %[[NE_REG]], %[[NE_REG]] 47 ; CHECK: jne 48 49 attributes #0 = { nounwind optsize } 50 attributes #1 = { argmemonly nounwind } 51
