; RUN: llc < %s -mtriple=armv7-apple-ios | FileCheck %s ;rdar://8003725 @G1 = external global i32 @G2 = external global i32 define i32 @f1(i32 %cond1, i32 %x1, i32 %x2, i32 %x3) { entry: ; CHECK-LABEL: f1: ; CHECK: cmp ; CHECK: moveq ; CHECK-NOT: cmp ; CHECK: mov{{eq|ne}} %tmp1 = icmp eq i32 %cond1, 0 %tmp2 = select i1 %tmp1, i32 %x1, i32 %x2 %tmp3 = select i1 %tmp1, i32 %x2, i32 %x3 %tmp4 = add i32 %tmp2, %tmp3 ret i32 %tmp4 } @foo = external global i32 @bar = external global [250 x i8], align 1 ; CSE of cmp across BB boundary ; rdar://10660865 define void @f2() nounwind ssp { entry: ; CHECK-LABEL: f2: ; CHECK: cmp ; CHECK: poplt ; CHECK-NOT: cmp ; CHECK: movle %0 = load i32, i32* @foo, align 4 %cmp28 = icmp sgt i32 %0, 0 br i1 %cmp28, label %for.body.lr.ph, label %for.cond1.preheader for.body.lr.ph: ; preds = %entry %1 = icmp sgt i32 %0, 1 %smax = select i1 %1, i32 %0, i32 1 call void @llvm.memset.p0i8.i32(i8* getelementptr inbounds ([250 x i8], [250 x i8]* @bar, i32 0, i32 0), i8 0, i32 %smax, i32 1, i1 false) unreachable for.cond1.preheader: ; preds = %entry ret void } declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind ; rdar://12462006 define i8* @f3(i8* %base, i32* nocapture %offset, i32 %size) nounwind { entry: ; CHECK-LABEL: f3: ; CHECK-NOT: sub ; CHECK: cmp ; CHECK: blt %0 = load i32, i32* %offset, align 4 %cmp = icmp slt i32 %0, %size %s = sub nsw i32 %0, %size %size2 = sub nsw i32 %size, 0 br i1 %cmp, label %return, label %if.end if.end: ; We are checking cse between %sub here and %s in entry block. %sub = sub nsw i32 %0, %size2 %s2 = sub nsw i32 %s, %size %s3 = sub nsw i32 %sub, %s2 ; CHECK: sub [[R1:r[0-9]+]], [[R2:r[0-9]+]], r2 ; CHECK: sub [[R3:r[0-9]+]], [[R1]], r2 ; CHECK: sub [[R4:r[0-9]+]], [[R1]], [[R3]] ; CHECK-NOT: sub ; CHECK: str store i32 %s3, i32* %offset, align 4 %add.ptr = getelementptr inbounds i8, i8* %base, i32 %sub br label %return return: %retval.0 = phi i8* [ %add.ptr, %if.end ], [ null, %entry ] ret i8* %retval.0 }