; RUN: llc < %s -mtriple=x86_64-linux -asm-verbose=false | FileCheck %s ; RUN: llc < %s -mtriple=x86_64-win32 -asm-verbose=false | FileCheck %s ; LSR's OptimizeMax should eliminate the select (max). ; CHECK: foo: ; CHECK-NOT: cmov ; CHECK: jle define void @foo(i64 %n, double* nocapture %p) nounwind { entry: %cmp6 = icmp slt i64 %n, 0 ; <i1> [#uses=1] br i1 %cmp6, label %for.end, label %for.body.preheader for.body.preheader: ; preds = %entry %tmp = icmp sgt i64 %n, 0 ; <i1> [#uses=1] %n.op = add i64 %n, 1 ; <i64> [#uses=1] %tmp1 = select i1 %tmp, i64 %n.op, i64 1 ; <i64> [#uses=1] br label %for.body for.body: ; preds = %for.body.preheader, %for.body %i = phi i64 [ %i.next, %for.body ], [ 0, %for.body.preheader ] ; <i64> [#uses=2] %arrayidx = getelementptr double* %p, i64 %i ; <double*> [#uses=2] %t4 = load double* %arrayidx ; <double> [#uses=1] %mul = fmul double %t4, 2.200000e+00 ; <double> [#uses=1] store double %mul, double* %arrayidx %i.next = add nsw i64 %i, 1 ; <i64> [#uses=2] %exitcond = icmp eq i64 %i.next, %tmp1 ; <i1> [#uses=1] br i1 %exitcond, label %for.end, label %for.body for.end: ; preds = %for.body, %entry ret void } ; In this case, one of the max operands is another max, which folds, ; leaving a two-operand max which doesn't fit the usual pattern. ; OptimizeMax should handle this case. ; PR7454 ; CHECK: _Z18GenerateStatusPagei: ; CHECK: jle ; CHECK-NOT: cmov ; CHECK: xorl {{%edi, %edi|%ecx, %ecx|%eax, %eax}} ; CHECK-NEXT: align ; CHECK-NEXT: BB1_2: ; CHECK: callq ; CHECK-NEXT: incl [[BX:%[a-z0-9]+]] ; CHECK-NEXT: cmpl [[R14:%[a-z0-9]+]], [[BX]] ; CHECK: jl define void @_Z18GenerateStatusPagei(i32 %jobs_to_display) nounwind { entry: %cmp.i = icmp sgt i32 %jobs_to_display, 0 ; <i1> [#uses=1] %tmp = select i1 %cmp.i, i32 %jobs_to_display, i32 0 ; <i32> [#uses=3] %cmp8 = icmp sgt i32 %tmp, 0 ; <i1> [#uses=1] br i1 %cmp8, label %bb.nph, label %for.end bb.nph: ; preds = %entry %tmp11 = icmp sgt i32 %tmp, 1 ; <i1> [#uses=1] %smax = select i1 %tmp11, i32 %tmp, i32 1 ; <i32> [#uses=1] br label %for.body for.body: ; preds = %for.body, %bb.nph %i.010 = phi i32 [ 0, %bb.nph ], [ %inc, %for.body ] ; <i32> [#uses=1] %it.0.09 = phi float* [ null, %bb.nph ], [ %call.i, %for.body ] ; <float*> [#uses=1] %call.i = call float* @_ZSt18_Rb_tree_decrementPKSt18_Rb_tree_node_base(float* %it.0.09) ; <float*> [#uses=1] %inc = add nsw i32 %i.010, 1 ; <i32> [#uses=2] %exitcond = icmp eq i32 %inc, %smax ; <i1> [#uses=1] br i1 %exitcond, label %for.end, label %for.body for.end: ; preds = %for.body, %entry ret void } declare float* @_ZSt18_Rb_tree_decrementPKSt18_Rb_tree_node_base(float*)